摘要:
A light source apparatus includes a light source module, a local dimming control part and a light source driving part. The light source module includes a plurality of light-emitting blocks. Each of the light-emitting blocks includes a first color light source, a second color light source and a third color light source, respectively. The local dimming control part drives the light-emitting blocks by blocks. The local dimming control part sets a reference duty signal for first, second and third color driving signals in accordance with a driving mode of the light source module. The light source driving part generates the first color driving signal, the second color driving signal and the third color driving signal by using the reference duty ratio set in accordance with the driving mode and a driving current having a same peak current level in accordance with the driving mode.
摘要:
A light source module of a display device comprises light-emitting blocks each of which comprises multiple sets of light sources, with different sets emitting different colors (e.g. red, green and blue). Each set is independently controllable according to one or more driving parameters. A local-dimming method comprises: (a) in each color-dimming period, driving each light-emitting block by the first color-dimming process; (b) in each compensating period, driving each light-emitting block by a full-color process which is independent of the image; (c) in each compensating period, sensing emitted light and determining the one or more driving parameters' reference driving values operable to generate a reference color; (d) in at least one of the color-dimming and compensating periods, driving each light-emitting block using the one or more driving parameters' values which depend on the reference driving values; and (e) between a color-dimming period and an adjacent compensating period, gradually switching the light-source module between the first color-dimming process and the full-color process.
摘要:
A light source module of a display device comprises light-emitting blocks each of which comprises multiple sets of light sources, with different sets emitting different colors (e.g. red, green and blue). Each set is independently controllable according to one or more driving parameters. A local-dimming method comprises: (a) in each color-dimming period, driving each light-emitting block by the first color-dimming process; (b) in each compensating period, driving each light-emitting block by a full-color process which is independent of the image; (c) in each compensating period, sensing emitted light and determining the one or more driving parameters' reference driving values operable to generate a reference color; (d) in at least one of the color-dimming and compensating periods, driving each light-emitting block using the one or more driving -parameters' values which depend on the reference driving values; and (e) between a color-dimming period and an adjacent compensating period, gradually switching the light-source module between the first color-dimming process and the full-color process.
摘要:
A backlight assembly includes a main circuit board having a light-generating part, a control circuit board which provides a control signal for controlling the light-generating part, and a sub-circuit board which is electrically connected to the control circuit board and receives the control signal, the sub-circuit board including a buffer which generates an amplified control signal in response to the control signal, and where the sub-circuit board is electrically connected to the main circuit board and provides the amplified control signal. The control circuit board and the main circuit board are electrically connected by the sub-circuit board, and the sub-circuit board amplifies the control signal received from the control circuit board and provides the control signal to the main circuit board.
摘要:
A light source driving device includes a resolution analyzing part, a dimming block adjusting part, a local dimming part and a light source unit. The resolution analyzing part obtains an image resolution. The dimming block adjusting part adjusts the size or the number of dimming blocks generating light in a local dimming method in response to the resolution. The local dimming part generates a local dimming signal for individually driving the dimming blocks in response to the image data and the size or the number of dimming blocks. The light source unit is driven by the local dimming signal to generate light. The size or the number of the dimming blocks is adjusted to be optimized for the obtained image resolution, so that regardless of the image resolution, a local dimming signal corresponding to the size and the number of the dimming blocks may be generated.
摘要:
A light source driving device includes a resolution analyzing part, a dimming block adjusting part, a local dimming part and a light source unit. The resolution analyzing part obtains an image resolution. The dimming block adjusting part adjusts the size or the number of dimming blocks generating light in a local dimming method in response to the resolution. The local dimming part generates a local dimming signal for individually driving the dimming blocks in response to the image data and the size or the number of dimming blocks. The light source unit is driven by the local dimming signal to generate light. The size or the number of the dimming blocks is adjusted to be optimized for the obtained image resolution, so that regardless of the image resolution, a local dimming signal corresponding to the size and the number of the dimming blocks may be generated.
摘要:
A backlight unit includes a substrate and has a plurality of light emitting areas. In each light emitting area, at least one light emitting diode and a bypass current path are connected in parallel between a connection node and a switching unit. The switching unit is configured to connect a selected one of the light emitting diode and the bypass unit to the connection node of the next light emitting area.
摘要:
A light source assembly includes a light source which emits light; a detector which detects the light and generates a light signal based on a property of the light; an operator operably connected to the detector and which receives the light signal and calculates a color coordinate of the light source based on the light signal; a comparator operably connected to the operator and which compares the color coordinate of the light source to a predetermined reference color coordinate; and a control unit operably connected to the comparator and which controls a pulse width modulation signal transmitted to the light source based on a result of the comparison of the comparator.
摘要:
A backlight assembly includes a first light source unit including n light emitting members; and a light guide plate including a first side adjacent to the first light source unit, and a first groove adjacent to a first end of the first side.
摘要:
An organic electroluminescence display including: a gate line disposed on a substrate; a data line crossing the gate line; a TFT connected to the gate and data lines; a capacitor connected to the TFT; and an OLED connected to the TFT. A gate electrode of the TFT and a lower electrode of the capacitor are patterned from a first layer. A gate insulating layer disposed on the gate electrode and an insulating island disposed on the gate line are patterned from a second layer. A semiconductor island disposed on the insulating island and an active layer disposed on the gate insulating layer are patterned from a third layer. An insulating layer is disposed on the TFTs, the capacitor, and between the semiconductor island and the data line. An upper electrode of the capacitor, source/drain electrodes of the TFT, and the data line are patterned from a fourth layer.