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Embedded capacitive type touch panel and preparation method thereof

A technology with embedded capacitors and touch panels, which is applied in the fields of electrical digital data processing, optics, instruments, etc., can solve the problems of decreased touch sensing performance, increased thickness and weight of LCDs, and high cost of embedded capacitive touch LCDs, etc. problem, achieve the effect of improving touch sensing performance and reducing cost

Inactive Publication Date: 2012-09-05
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The external capacitive touch LCD display, because a touch panel must be superimposed on the LCD display, greatly increases the thickness and weight of the LCD display, which does not meet the current market requirements for thin and short LCD displays. The number of layers of the control panel is large, so that when the light penetrates, the amount of light is absorbed, and the loss of light transmittance is large
[0004] In a traditional embedded capacitive touch LCD, the touch circuit is designed on the array substrate. This design will separate the built-in touch sensing electrodes from the LCD screen with other materials, resulting in The distance between the display screens increases, which in turn affects the capacitance change generated by the touch operation, which reduces the touch sensing performance. Moreover, since the touch circuit is built into the liquid crystal display, the production process of the liquid crystal display is increased, making the production The cost of embedded capacitive touch LCD is higher

Method used

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  • Embedded capacitive type touch panel and preparation method thereof
  • Embedded capacitive type touch panel and preparation method thereof
  • Embedded capacitive type touch panel and preparation method thereof

Examples

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Embodiment 1

[0055] An embodiment of the present invention provides an embedded capacitive touch panel, such as figure 1 As shown, the in-cell capacitive touch panel includes:

[0056] A touch circuit, the touch circuit includes: a sensing unit 2 and an amplification unit 3 arranged on the array substrate 1;

[0057] The sensing unit 2 is connected to the amplifying unit 3, and the sensing unit is connected to the gate line 4 in the display pixel structure on the array substrate 1;

[0058] The gate line 4 in the display pixel structure provides a turn-on voltage for the sensing unit 2. After the sensing unit 2 is turned on, a voltage is generated in the sensing unit 2, and the touch operation causes the voltage in the sensing unit 2 to change, and the amplification The unit 3 amplifies the voltage change in the sensing unit 2 and derives the amplified voltage change.

[0059] Such as figure 2 As shown, the sensing unit 2 in the embodiment of the present invention includes:

[0060] T...

Embodiment 2

[0072] An embodiment of the present invention provides a method for manufacturing an embedded capacitive touch panel, such as Figure 5 Shown, this preparation method comprises:

[0073] 101. Form an array substrate including a display pixel structure and a touch control circuit, the touch control circuit comprising: a sensing unit circuit and an amplification unit circuit connected to each other, the sensing unit circuit is connected to a gate line in the display pixel structure, the The gate line in the display pixel structure provides a turn-on voltage for the sensing unit circuit. After the sensing unit circuit is turned on, a voltage is generated in the sensing unit circuit. The touch operation causes the voltage in the sensing unit circuit to change, and the amplification unit The circuit amplifies the voltage change in the sensing unit circuit and derives the amplified voltage change;

[0074] 102. Forming a color filter substrate;

[0075] 103. Package the color filt...

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Abstract

The embodiment of the invention discloses an embedded capacitive type touch panel and a preparation method thereof, relating to the technical field of a touch panel. The cost of the embedded capacitive type touch panel is reduced; and the touch sensing property is improved. The embedded capacitive type touch panel comprises a touch circuit; the touch circuit comprises a sensing unit and an amplifying unit, which are arranged on an array substrate; the sensing unit is connected with the amplifying unit; and the sensing unit is connected with a grid line in a display pixel structure on the array substrate. The preparation method of the embedded capacitive type touch panel comprises the following steps of: forming the array substrate consisting of the display pixel structure and the touch circuit; forming a colorful film substrate; and packaging the colorful film substrate and the array substrate in a box, and filling a liquid crystal material into the box.

Description

technical field [0001] The invention relates to the technical field of touch panels, in particular to an embedded capacitive touch panel and a preparation method thereof. Background technique [0002] Currently, touch panel technology is widely used in liquid crystal displays to produce displays capable of simultaneously displaying images and input functions, such as resistive, capacitive, and wave (such as sound waves, infrared rays, and lasers). Capacitive touch panels are divided into: external capacitive touch panels and embedded capacitive touch panels. Among them, the external capacitive touch The touch panel is to integrate the touch panel into the liquid crystal display. [0003] The external capacitive touch LCD display, because a touch panel must be superimposed on the LCD display, greatly increases the thickness and weight of the LCD display, which does not meet the current market requirements for thin and short LCD displays. The number of layers of the control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G02F1/1362G02F1/1368G02F1/1333G06F3/044
CPCG02F1/13338G02F1/13394G02F2202/16G06F3/0412G06F2203/04103G06F3/0443G02F1/13398G02F1/1368
Inventor 黎蔚陈东
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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