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Touch LCD screen

A liquid crystal display and touch-type technology, which is applied in static indicators, optics, instruments, etc., can solve the problems of high manufacturing cost, poor linearity and accuracy, and uneven resistance distribution of touch screens, so as to improve resolution and accuracy , uniform resistance distribution, and excellent semiconductor properties

Active Publication Date: 2010-01-06
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the preparation process of the ITO layer, a relatively high vacuum environment is required and it needs to be heated to 200-300°C. Therefore, the preparation cost of the touch screen using ITO as the transparent conductive layer is relatively high.
In addition, as a transparent conductive layer, the ITO layer in the prior art has shortcomings such as insufficient mechanical properties, difficulty in bending, and uneven resistance distribution, and is not suitable for flexible touch-type liquid crystal displays.
In addition, the transparency of ITO will gradually decrease in humid air
As a result, the existing touch screen and the touch-type liquid crystal display using the touch screen have disadvantages such as poor durability, low sensitivity, poor linearity and accuracy.

Method used

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Embodiment Construction

[0017] The touch-type liquid crystal display screen of the technical solution will be described in detail below in conjunction with the accompanying drawings.

[0018] see figure 1 The embodiment of the technical solution provides a touch-type liquid crystal display 300, which includes an upper substrate 100, a lower substrate 200 opposite to the upper substrate 100, and a liquid crystal disposed between the upper substrate 100 and the lower substrate 200. Layer 310.

[0019] The liquid crystal layer 310 includes a plurality of long rod-shaped liquid crystal molecules. The liquid crystal material of the liquid crystal layer 310 is a commonly used liquid crystal material in the prior art. The thickness of the liquid crystal layer 310 is 1-50 microns. In this embodiment, the thickness of the liquid crystal layer 310 is 5 microns.

[0020] see figure 2 , the upper substrate 100 sequentially includes a touch screen 10 , a first polarizing layer 110 and a first alignment layer...

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Abstract

The invention discloses a touch LCD screen, which comprises an upper substrate, a lower substrate, and a liquid crystal layer, wherein the upper substrate comprises a touch screen; the lower substrate and the upper substrate are oppositely arranged; the lower substrate comprises a thin film transistor panel; the liquid crystal layer is arranged between the upper substrate and the lower substrate; a conducting layer of the touch screen comprises a first carbon nanotube layer; and a semiconductor layer of a thin film transistor on the thin film transistor panel comprises a second carbon nanotube layer.

Description

technical field [0001] The invention relates to a liquid crystal display screen, in particular to a touch type liquid crystal display screen. Background technique [0002] Liquid crystal display has become one of the best display methods because of low power consumption, miniaturization and high-quality display effect. Currently, the more commonly used liquid crystal display is a TN (twisted nematic) mode liquid crystal display (TN-LCD). For TN-LCD, when no voltage is applied to the electrodes, the liquid crystal display is in the "OFF" state, and the light energy passes through the liquid crystal display in a light-transmitting state; when a certain voltage is applied to the electrodes, the liquid crystal display is in the "ON" state In the state, the long axis direction of the liquid crystal molecules is arranged along the direction of the electric field, and the light cannot pass through the liquid crystal display, so it is in a light-shielding state. By selectively app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G06F3/045G06F3/041C01B31/02G02F1/1362H01L27/12
Inventor 姜开利刘亮范守善陈杰良郑嘉雄吴志笙
Owner TSINGHUA UNIV
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