公开(公告)号：US07446481B2

公开(公告)日：2008-11-04

申请号：US11503280

申请日：2006-08-14

Applicant: Jeong-il Kang ,  Sang-hoon Lee ,  Chang-wan Hong ,  Yung-jun Park

Inventor： Jeong-il Kang ,  Sang-hoon Lee ,  Chang-wan Hong ,  Yung-jun Park

IPC: H05B37/00

CPC classification number: H05B33/086 ,  H05B33/0818 ,  Y02B20/346

Abstract: A display device and method for supplying stable electric power for a light source are provided. A display device comprises a plurality of light sources, a variable electrical power supply which supplies electric power for the light sources, a switching unit which is connected in series with the light sources, and a controller which controls the variable electrical power supply so that voltage across both ends of the switching unit is consistently held in relation to voltage across both ends of the light sources.

Abstract translation: 提供了一种用于为光源提供稳定电力的显示装置和方法。 显示装置包括多个光源，为光源提供电力的可变电源，与光源串联连接的切换单元，以及控制可变电源使得电压 跨越开关单元两端的电压一贯地保持在与光源两端的电压方面。

公开(公告)号：US20080074060A1

公开(公告)日：2008-03-27

申请号：US11777375

申请日：2007-07-13

Applicant: Byoung-dae Ye ,  Sang-hoon Lee ,  Ho-sik Shin

Inventor： Byoung-dae Ye ,  Sang-hoon Lee ,  Ho-sik Shin

IPC: H05B37/02

CPC classification number: H05B33/0857 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/346 ,  Y10S315/04

Abstract: A backlight unit includes: a power supplying part; a non-dimming point light source receiving power from the power supplying part and providing a feed back signal to the power supplying part; a dimming control part outputting a dimming signal; and a plurality of dimming point light sources receiving power from the power supplying part, and receiving the dimming signal from the dimming control part.

Abstract translation: 背光单元包括：供电部; 所述非调光点光源从所述供电部接收电力，并向所述供电部提供反馈信号; 输出调光信号的调光控制部; 以及多个调光点光源，其从所述供电部接收电力，并且从所述调光控制部接收所述调光信号。

公开(公告)号：US20080055301A1

公开(公告)日：2008-03-06

申请号：US11806141

申请日：2007-05-30

Applicant: Jeong-Il Kang ,  Sang-hoon Lee

Inventor： Jeong-Il Kang ,  Sang-hoon Lee

IPC: G09G5/00

CPC classification number: H05B33/0851

Abstract: Discloses is a display apparatus capable of alleviating an offset value occurring for the same current command value and minimizing a delay time taken for a light source to emit light after transmission of the current command value. The display apparatus comprises a display part that displays an image based on an image signal; a light source that supplies light to the display part; a current commanding part that outputs a current command value according to a brightness of the image; a current detecting part that detects current supplied to the light source; and a controller that sets the outputted current command value as a reference current command value if a value of the detected current value falls within a predetermined tolerable range, and controls the current commanding part such that the reference current command value is reflected in a target current command value of the light source depending on the brightness of the image.

Abstract translation: 公开了一种显示装置，其能够减轻对于相同的电流指令值而产生的偏移值，并且使传输当前指令值之后光源发光所需的延迟时间最小化。 显示装置包括基于图像信号显示图像的显示部分; 向显示部供给光的光源; 电流指令部，其根据图像的亮度输出电流指令值; 电流检测部，其检测供给到所述光源的电流; 如果检测到的电流值的值落在预定的容许范围内，则将输出的电流指令值设定为基准电流指令值，并控制电流指令部，使得基准电流指令值反映在目标电流 根据图像的亮度，光源的指令值。

公开(公告)号：US20080042590A1

公开(公告)日：2008-02-21

申请号：US11797434

申请日：2007-05-03

Applicant: Sang-hoon Lee ,  Jeong-Il Kang

Inventor： Sang-hoon Lee ,  Jeong-Il Kang

IPC: H05B39/04

CPC classification number: H05B33/0818 ,  G09G3/3406 ,  G09G2320/0252

Abstract: A display apparatus and a control method thereof are provided. The inventive method and apparatus improves a response speed of a light source and image quality by minimizing a ripple of a current and reducing a time required to increase/decrease an amount of a current to drive a light source when a light source is turned on and off or a size of a current used to drive a light source is changed. An exemplary display apparatus includes a light source, a current generator which generates a driving current to drive the light source, a first current consumer which has a smaller resistance value than the light source, a first switch which is switched on and off to supply the driving current generated by the current generator either to the light source or to the first current consumer and a controller which controls the current generator to generate the driving current to reach a target value, and controls the first switch to supply the driving current to the first current consumer if the target value is smaller than the driving current.

Abstract translation: 提供了一种显示装置及其控制方法。 本发明的方法和装置通过最小化电流的纹波并减少在光源被接通时增加/减少驱动光源的电流量所需的时间，从而提高光源的响应速度和图像质量，以及 熄灭或用于驱动光源的电流的大小被改变。 示例性显示装置包括光源，产生用于驱动光源的驱动电流的电流发生器，具有比光源更小的电阻值的第一电流消耗器，被接通和断开以提供 由电流发生器产生的驱动电流到光源或第一电流消耗器;以及控制器，其控制电流发生器产生驱动电流以达到目标值，并且控制第一开关以将驱动电流提供给第一 当前消费者如果目标值小于驱动电流。

公开(公告)号：US07321206B2

公开(公告)日：2008-01-22

申请号：US11642840

申请日：2006-12-21

Applicant: Jeong-il Kang ,  Sang-hoon Lee

Inventor： Jeong-il Kang ,  Sang-hoon Lee

IPC: G05F1/00

CPC classification number: H05B33/0887 ,  H05B33/0815 ,  Y02B20/347

Abstract: An apparatus for driving an LED is provided. The driving apparatus may have an LED unit including at least one LED, and a current controlling unit for controlling the magnitude of current flowing through the LED unit in response to a control signal. The LED driving apparatus may include a voltage detecting unit for detecting a voltage across the LED unit and a control signal blocking unit for comparing the voltage detected by the voltage detecting unit with a reference voltage. The control signal blocking part prevents the control signal from being applied to the current controlling unit when the detected voltage is lower than the reference voltage. With this configuration, the LED driving apparatus is capable of preventing a circuit from being damaged by overcurrent by cutting off a control signal when a determined number or more of LEDs are short-circuited or otherwise not operational.

Abstract translation: 提供一种用于驱动LED的装置。 驱动装置可以具有包括至少一个LED的LED单元和用于响应于控制信号来控制流过LED单元的电流的大小的电流控制单元。 LED驱动装置可以包括用于检测LED单元上的电压的电压检测单元和用于将由电压检测单元检测的电压与参考电压进行比较的控制信号阻挡单元。 当检测到的电压低于参考电压时，控制信号阻挡部分防止控制信号施加到电流控制单元。 利用这种配置，LED驱动装置能够通过在确定的LED数量多或不能工作的情况下通过切断控制信号来防止电路被过电流损坏。

公开(公告)号：US20070103905A1

公开(公告)日：2007-05-10

申请号：US11589809

申请日：2006-10-31

Applicant: Jeong-il Kang ,  Sang-hoon Lee ,  Yung-jun Park

Inventor： Jeong-il Kang ,  Sang-hoon Lee ,  Yung-jun Park

IPC: F21V23/04

CPC classification number: H05B33/083 ,  H05B33/0818

Abstract: An apparatus and method for controlling emission of light are provided. The light emitting apparatus comprises a plurality of first light emitting parts which are connected with each other in series, a first current supply which supplies a current to the plurality of first light emitting parts, a plurality of switches which are respectively connected with the plurality of first light emitting parts in parallel to make the current be transmitted to or bypass the first light emitting parts and a controller which receives brightness information corresponding to the respective first light emitting parts and controls the plurality of first switches to make overall light emitting time of the first light emitting parts within time intervals correspond to a brightness level of the brightness information. The present invention provides an apparatus and method for emitting light by driving a plurality of light emitting parts to independently emit light in various brightness levels with a simplified circuit configuration and improved efficiency.

Abstract translation: 提供了一种用于控制光发射的装置和方法。 发光装置包括彼此串联连接的多个第一发光部，向多个第一发光部供给电流的第一电流源，分别与多个第一发光部连接的多个开关 第一发光部分并联以使电流传输到或绕过第一发光部分;以及控制器，其接收对应于各个第一发光部分的亮度信息，并控制多个第一开关，以使整个发光部分的总发光时间 时间间隔内的第一发光部分对应于亮度信息的亮度级。 本发明提供一种用于通过驱动多个发光部件以通过简化的电路配置独立发射各种亮度的光并提高效率来发光的装置和方法。

公开(公告)号：US20070097045A1

公开(公告)日：2007-05-03

申请号：US11517506

申请日：2006-09-08

Applicant: Sang-hoon Lee ,  Yung-jun Park ,  Jeong-il Kang

Inventor： Sang-hoon Lee ,  Yung-jun Park ,  Jeong-il Kang

IPC: G09G3/32

CPC classification number: G09G3/3426 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/041 ,  G09G2320/062 ,  G09G2320/0633 ,  G09G2360/145

Abstract: A display apparatus including a backlight with an LED and a brightness adjusting method which is capable of accomplishing uniform brightness across the entire display screen are provided. A display apparatus comprising a backlight comprising a plurality of LEDs and a plurality of current supplying parts respectively supplying a driving current to the LEDs, comprises a light sensor receiving light generated from the LEDs, and a controlling part controlling the current supplying parts to selectively drive the LEDs, and adjusting the amount of the driving current of the current supplying parts to be supplied to the driven LED so that the intensity of light received to the light sensor corresponds to a predetermined reference value.

Abstract translation: 提供一种包括具有LED的背光源和能够在整个显示屏幕上实现均匀亮度的亮度调节方法的显示装置。 一种显示装置，包括：背光源，包括分别向LED供给驱动电流的多个LED和多个电流供给部，包括接收从所述LED产生的光的光传感器，以及控制所述电流供给部选择性驱动的控制部 LED，并且调整要供给到驱动LED的电流供应部件的驱动电流量，使得接收到光传感器的光的强度对应于预定的参考值。

公开(公告)号：US20070001620A1

公开(公告)日：2007-01-04

申请号：US11452211

申请日：2006-06-14

Applicant: Sang-hoon Lee ,  Jeong-il Kang ,  Kyoung-geun Lee ,  Yung-jun Park

Inventor： Sang-hoon Lee ,  Jeong-il Kang ,  Kyoung-geun Lee ,  Yung-jun Park

IPC: H05B41/24

CPC classification number: H05B33/0815 ,  H05B33/0818

Abstract: Provided is a display apparatus that includes a light source, that further includes a current generator for outputting a predetermined driving current. Further provided is a first path for supplying the driving current output by the current generator to the light source and a second path for intercepting the driving current supplied to the light source. In addition, a switch is provided for supplying the driving current output by the current generator either to the first path or to the second path and a controller is provided for controlling the switch to supply the driving current output by the current generator to the first path while the light source is turned on, and to supply the driving current to the second path while the light source is turned off. Thus, the present invention provides a display apparatus which improves a response time of electrical current when a light source is turned on and off, and thereby improves display quality.

Abstract translation: 提供了一种显示装置，其包括光源，该光源还包括用于输出预定驱动电流的电流发生器。 还提供了用于将由电流发生器输出的驱动电流提供给光源的第一路径和用于截取提供给光源的驱动电流的第二路径。 另外，提供用于将由电流发生器输出的驱动电流提供给第一路径或第二路径的开关，并且提供控制器用于控制开关以将由电流发生器输出的驱动电流提供给第一路径 同时光源被接通，并且在光源关闭时将驱动电流提供给第二路径。 因此，本发明提供了一种显示装置，其在光源接通和断开时改善电流的响应时间，从而提高显示质量。

公开(公告)号：US20060290298A1

公开(公告)日：2006-12-28

申请号：US11442389

申请日：2006-05-30

Applicant: Jeong-il Kang ,  Sang-hoon Lee ,  Kyoung-geun Lee ,  Yung-jun Park

Inventor： Jeong-il Kang ,  Sang-hoon Lee ,  Kyoung-geun Lee ,  Yung-jun Park

IPC: H05B41/36

CPC classification number: H05B33/0815 ,  G09G3/14 ,  G09G3/2014 ,  G09G3/3406 ,  G09G2320/0233 ,  G09G2330/02

Abstract: The present invention relates to a display apparatus comprising a light emitting element supplying light, and a switch to switch on and off power, which is supplied to the light emitting element. A comparing unit compares a predetermined first reference voltage and an output voltage which is proportional to a current applied to the light emitting element. A controller compares a comparison voltage output, which is a comparison result of the comparing unit and a predetermined second reference voltage, in order to control the switch to be switched on and off. Accordingly, the present invention provides a display apparatus and control method which precisely controls a size of a current applied to a light emitting element.

公开(公告)号：US20060198005A1

公开(公告)日：2006-09-07

申请号：US11254713

申请日：2005-10-21

Applicant: Sang-hoon Lee

Inventor： Sang-hoon Lee

IPC: G02B26/08

CPC classification number: G02B26/122

Abstract: A scanning unit includes a casing, a polygon mirror assembly disposed in the casing, and a foam metallic material disposed in the casing to absorb a noise generated by the polygon mirror assembly. Thus, the scanning unit and an image forming device having the same can absorb and remove a noise generated by the polygon mirror assembly, thereby decreasing generation of the noise and a vibration thereof and enhancing a heat release from the laser scanning unit. Additionally, the image forming device may be made more compact, since a heat radiating fin is not necessary.

Abstract translation: 扫描单元包括壳体，设置在壳体中的多面镜组件和设置在壳体中以吸收由多面镜组件产生的噪声的泡沫金属材料。 因此，扫描单元和具有该噪声的图像形成装置可以吸收和去除由多面镜组件产生的噪声，从而减少噪声的产生及其振动，并增强从激光扫描单元的放热。 另外，由于不需要散热片，所以可以使图像形成装置更紧凑。