Abstract:
Method and apparatus for partial lens shading compensation are provided. An image area is divided, from the inside towards the outside of the image area, into several partial areas centered on an optical center of the image. When a target pixel is identified as being located in one of the partial areas, a corresponding compensation gain is determined according to the position of the target pixel with reference to the optical center. Another compensation gain is determined according to the position of the target pixel with reference to the optical center. A mixed compensation value is determined according to the compensation gains, so as to compensate the target pixel.
Abstract:
A display apparatus includes a source driver and a display panel. The source driver provides a plurality of pixel voltages which respectively correspond to a maximum gray-level voltage or a minimum gray-level voltage. The display panel includes a plurality of data lines, a plurality of pixel switches, a plurality of pixel capacitors, and a plurality of gray-level switches. The data lines are coupled to the source driver to receive the pixel voltages. Each pixel switch is respectively coupled to the corresponding data line to transmit the corresponding pixel voltage. Each pixel capacitor is respectively coupled between the corresponding pixel switch and a common voltage to receive the corresponding pixel voltage. Each gray-level switch is respectively coupled to the corresponding pixel capacitor in parallel and respectively receives a gray-level control signal. The gray-level switches regulate voltage drops across the pixel capacitors according to the corresponding gray-level control signals.
Abstract:
A display panel including a plurality of sub-pixel groups is provided. The sub-pixel groups are arranged repeatedly to form a pixel array, and each of the sub-pixel groups is written by a plurality of pixel data. The sub-pixel group includes a plurality of main type pixel units and a plurality of sub type pixel units. Each of the main type pixel units is written by one pixel data among the plurality of pixel data, and each of the sub type pixel units is written by at least one pixel data among the plurality of pixel data. The main type pixel units are arranged to form a geometry form and the main type pixel units surround a single sub type pixel unit among the sub type pixel units.
Abstract:
A display device with a plurality of sub-pixel groups is disclosed. Each of the sub-pixel groups comprises a first sub-pixel, located at a first column; a second sub-pixel, located at a second column adjacent to the first column; a third sub-pixel, located at a third column adjacent to the second column; a fourth sub-pixel, located at a fourth column adjacent to the third column; and a fifth sub-pixel, located at the fourth column; wherein the row of the second sub-pixel overlaps the row of the first sub-pixel; wherein the row of the third sub-pixel overlaps the row of the first sub-pixel; wherein the row of at least one of the fourth sub-pixel and the fifth sub-pixel overlaps the row of the first sub-pixel; wherein a sum of the heights of the fourth sub-pixel and the fifth sub-pixel is smaller than or equal to the height of the first sub-pixel.
Abstract:
A display device includes a plurality of sub-pixel groups. Each of sub-pixel groups includes a first sub-pixel located at a first column; a second sub-pixel located at a second column adjacent to the first column; a third sub-pixel located at a third column adjacent to the second column; a fourth sub-pixel located at a fourth column adjacent to the third column; and a fifth sub-pixel located at the third column and the fourth column; wherein height of first sub-pixel equals height of second sub-pixel, height of first sub-pixel is greater than heights of third sub-pixel, fourth sub-pixel and fifth sub-pixel, and height of the first sub-pixel is different from or equal to sum of heights of fifth sub-pixel and third sub-pixel or sum of heights of fifth sub-pixel and fourth sub-pixel; wherein height of fifth sub-pixel is different from or equal to heights of third sub-pixel and fourth sub-pixel.
Abstract:
A level shifter for high-speed level shifting includes a first P-channel transistor, comprising a gate coupled to a drain, and a source coupled to a system voltage; a second P-channel transistor, comprising a gate coupled to the gate of the first P-channel transistor, and a source coupled to the system voltage; a first N-channel transistor, comprising a drain coupled to the drain of the first P-channel transistor, and a source coupled to a ground level; and a second N-channel transistor, comprising a drain coupled to a drain of the second P-channel transistor, and a source coupled to the ground level; wherein the first N-channel transistor and the second N-channel transistor are low-threshold-voltage transistors or native transistors.
Abstract:
The present disclosure provides a non-overlap data transmission method for a liquid crystal display (LCD). The non-overlap data transmission method includes obtaining an entire fame image data; dividing the entire frame image data into a plurality of image data segments and individually sending the image data segments to a plurality of display processing units at the same time, wherein each of the image data segments is sent to one of the display processing units and image data of each image data segment does not overlap with image data of the other image data segments; and mutually sending image data of the image data segments through the display processing units.
Abstract:
A detector and a method for detecting IQ swap are provided. The detector includes a first correlator, a second correlator and a comparator. The first correlator calculates a first correlation value between a received symbol stream and a first conjugated symbol stream. The received symbol stream is generated by a transmission of a known symbol stream through a transmission channel. The first conjugated symbol stream is conjugate complex of the known symbol stream. The second correlator calculates a second correlation value between the first conjugated symbol stream and a second conjugated symbol stream. The second conjugated symbol stream is conjugate complex of the received symbol stream. In accordance with a relationship between the first and second correlation values, the comparator determines whether an in-phase component and a quadrature component in the received symbol stream have been swapped.
Abstract:
A dimming method and dimming device for a backlight module are provided. The dimming method includes the following steps. Light distribution information of a plurality of light sources of the backlight module corresponding to a display panel is provided. According to the light distribution information of each of the light sources, a plurality of light contribution ratios of the light sources corresponding to a plurality of different positions of the display panel are obtained respectively. According to the light contribution ratios corresponding to the different positions, the needed intensity of each of the light sources is determined respectively.
Abstract:
The present invention discloses an integrated source driver for a liquid crystal display device. The integrated source driver includes a reference voltage generating circuit, for providing a plurality of adjustable voltage ranges within a supply voltage and a ground level, and a reference voltage selecting circuit, including a plurality of digital to analog converters, for selecting and generating a plurality of internal reference voltages from the plurality of adjustable voltage ranges, respectively. The plurality of adjustable voltage ranges decrease progressively.