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Active matrix display device

Inactive Publication Date: 2010-06-09
TPO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there may be problems with device failure due to deterioration of parts, heat generation, etc.

Method used

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  • Active matrix display device
  • Active matrix display device
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Examples

Experimental program
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Embodiment 1

[0039] figure 2 Shown is the gray scale representation of the display device according to the first embodiment of the present invention. Since the display device of this embodiment is a black and white display mode, attention should be paid to figure 2 The control method shown in a frame.

[0040] like figure 2 As shown, the shutter control unit 14 changes the opening time of the optical shutter within one frame period into four stages with a ratio of 1:2:4:8. Specifically, a specific frame is divided into 4 subframes, if a frame exists for T F , then the existence time of each subframe in the frame is sequentially configured as (1 / 15)×T F 、(2 / 15)×T F 、(4 / 15)×T F and (8 / 15)×T F .

[0041] In each subframe, the light source control unit 16 changes the intensity of light emitted by the light source 12 (hereinafter referred to as "backlight luminance") in two steps at a ratio of 1:16. Specifically, if the backlight luminance is set to 1 in the first half period of the...

Embodiment 2

[0059] Figure 4 Shown is the gray scale representation of the display device according to the second embodiment of the present invention. Since the display device of this embodiment is a black and white display mode, attention should be paid to Figure 4 The control method shown in a frame.

[0060] Such as Figure 4 As shown, the shutter control section 14 and figure 2 As in the first embodiment shown, the optical shutter opening time within one frame period is changed into 4 steps with a ratio of 1:2:4:8. However, within one frame period, the changing periods are allocated sequentially at a ratio of 1:2:4:1:2:4:8:8. Specifically, if the duration of a frame is T F , then the first to third periods of the optical shutter open respectively have (1 / 30)×T F 、(2 / 30)×T F and (4 / 30)×T F Wait for different durations, and then the fourth to sixth periods also have (1 / 30)×T F 、(2 / 30)×T F and (4 / 30)×T F different durations, while the final seventh and eighth periods have th...

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Abstract

The invention provides an active matrix display device with a driving frequency as low as possible. An active matrix display device includes a pixel array consisting of multiple pixels, a backlight source, multiple optical shutters corresponding to respective pixels, a shutter control unit, a light source control unit, and a synchronization control unit. The backlight source is used for illuminating the pixels, thereby displaying an image comprising multiple frames. The shutter control unit is used for switching on / off the optical shutters. The light source control unit is used for modulating the intensity of the light beam emitted by the backlight source at two or more stages. The synchronization control unit is used for synchronizing the modulation of the intensity of the light beam emitted by the backlight source with the on / off statuses of the optical shutters, thereby implementing specified level performance in a specified frame. The invention needs less consumptive power, avoids problems of parts deterioration and heating so as to prolong the endurable period of the display device.

Description

technical field [0001] The present invention relates to an active matrix display device having a plurality of pixel arrays and a backlight illuminating the plurality of pixels for displaying images comprising a plurality of frames. Background technique [0002] A display having an optical shutter that operates in two stages and controlling the output light of a backlight according to the opening and closing of the shutter has been developed in the known technology. In recent years, with the development of micro-electromechanical systems (MEMS; MicroElectro Mechanical Systems) technology, shutters implemented according to this technology are disposed on thin-film transistor (TFT) substrates, and micro-electromechanical displays have also been developed. [0003] For example, it is recorded in pages 1054-1057 of the SID2008 abstract, in "Time Multiplexed Optical Shutter (TMOS)-Advantages & Advances (Time Multiplexed Optical Shutter (TMOS)-Advantages & Advanced )" describes th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G2320/062G09G2380/16G09G3/3651G09G3/2022G09G3/3406
Inventor 住尚树
Owner TPO DISPLAY