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Source driver of LCD

A display and signal driver technology, applied in the field of driving pixel structure signal lines to transmit and/or read signals, can solve the problems of high manufacturing cost, reduced product rate, and uneven brightness of touch displays

Active Publication Date: 2008-03-12
HANNSTAR DISPLAY CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this difference in aperture ratio will cause the disadvantage of uneven brightness in the touch display.
[0006] In addition, the configuration of the reading lines is also prone to defects in display testing, which reduces the yield in the manufacturing process, resulting in higher manufacturing costs and poorer display quality.

Method used

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  • Source driver of LCD
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Embodiment Construction

[0059] In the present invention, there is no need to configure a dedicated reading line in the pixel, and through the good design of the novel pixel, the signal line for transmitting data signals can also be used for transmitting signals to be read. Based on this idea, the present invention also provides a novel display pixel driving method, which is described as follows with the aid of an equivalent circuit diagram of the display pixel.

[0060] Referring to FIG. 4 , it is an equivalent circuit diagram of a pixel according to the first preferred embodiment of the present invention.

[0061] As shown in Figure 4, the pixel 40 includes a first transistor T1, the gate terminal of which is connected to the first gate line SELECT1, and the source terminal of the first transistor T1 is connected to the common line COMMON1 through the first capacitor Cst; the photosensitive transistor Photo TFT is used for generating light sensing signals, and the second transistor Switch TFT electr...

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Abstract

The invention provides a method for transmitting and / or reading signals by driving the signal line of the pixel structure, and the corresponding pixel structure, which can overcome the shortcomings of luminance nonuniformity of the traditional touch screen display due to the reading line configuration. The invention requires no special reading line set in the pixel and by the well-designed novel pixel, the signal line for carrying the data signal can also be used to transmit the photoinduction signal required to read or process.

Description

field of invention [0001] The present invention relates to a display driving method and its corresponding pixel structure, in particular to a method for driving signal lines of the pixel structure to transmit and / or read signals. Background technique [0002] In an existing touch display, a dedicated transmission line (ie, a so-called readout line) needs to be configured in a pixel of the display to read out a signal. Referring to FIG. 1 , it is a schematic diagram of a pixel structure of a conventional touch display according to known techniques, wherein a pixel 10' is defined by a pair of signal lines D1, D2 and a pair of gate lines SELECT1, SELECT2, and each The data signal is transmitted through the signal lines D1 and D2. The pixel 10' includes a first transistor T1' for display, its gate terminal is electrically connected to the gate line SELECT1; the source terminal of the first transistor T1' is electrically connected to the signal line D1, and its drain terminal is...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 施博盛潘轩霖
Owner HANNSTAR DISPLAY CORPORATION