Resistance type touch control screen and display device thereof
A touch screen and resistive technology, applied in the field of display devices and resistive touch screens, can solve the problems of high cost, complicated decoding method, inability to identify the touch position of each point, etc., and achieve the effect of simple control and accurate positioning
Inactive Publication Date: 2010-10-20
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology
[0002] An existing four-wire resistive touch screen, which includes two resistive layers separated by an isolation layer, can accurately locate the position of a single point touch, but cannot identify each point when multiple points (more than two points) are touched at the same time The touch position of
The general resistive touch screen has at least four wires. The more wires, the higher the cost, and the external circuit and other analysis devices that cooperate with it also need to correspond to four wires. The decoding method is more complicated and the cost is higher.
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[0029] see figure 1 , a resistive touch screen 10 attached to a display panel 20 , the resistive touch screen 10 sequentially includes a protective layer 11 , an electrode layer 12 , an isolation layer 13 , a resistive circuit layer 14 and a substrate 15 . Wherein, the protection layer 11 is composed of an elastic transparent insulating material, which is disposed on the surface of the touch screen 10 for protecting the touch screen 10 . The substrate 15 is made of rigid transparent material, and the lower surface of the substrate 15 is adjacent to the display panel 20 for carrying the touch screen 10 . The isolation layer 13 is composed of a transparent grid array composed of deformable insulating materials. When the user does not touch the touch screen 10, the isolation layer 13 separates the electrode layer 12 and the resistance circuit layer 14, so that the electrode layer 12 In the initial state, the resistive circuit layer 14 is electrically insulated. When the user to...
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The invention relates to a resistance type touch control screen and a display device thereof. The resistance type touch control screen comprises an electrode layer, an isolation layer, a resistance circuit layer, a voltage detection device, current detection devices, a display panel and a processor. The resistance type touch control screen is attached to the display panel; and a lead is led from the electrode layer to connect with the voltage detection device. The resistance circuit layer comprises a linear resistor bent to distribute on the whole plane of the resistance circuit layer; a lead is led out respectively from each of two ends of the linear resistor, and one end of the lead is connected with the current detection devices. The electrode layer and the resistance circuit layer are separated by the isolation layer when the user does not touch the touch screen; and when the user touches the touch screen to enable the electrode layer to contact the resistance circuit layer to generate a touch point, the voltage value of the electrode layer detected by the voltage detection device and the value of the current which flows out of the end of the linear resistor and is detected by the current detection device are changed. The processor receives the voltage value and the current value, determines the position of the touch point, and executes the corresponding input function.
Description
technical field [0001] The present invention relates to a touch screen, in particular to a resistive touch screen and a display device using the resistive touch screen. Background technique [0002] An existing four-wire resistive touch screen, which includes two resistive layers separated by an isolation layer, can accurately locate the position of a single point touch, but cannot identify each point when multiple points (more than two points) are touched at the same time the touch location. The general resistive touch screen has at least four wires, and the more wires, the higher the cost, and the external circuits and other analysis devices that cooperate with it also need to correspond to four wires. The decoding method is more complicated and the cost is higher. Contents of the invention [0003] In view of this, it is necessary to provide a resistive touch screen and its display device, which can realize precise positioning of single-point or two-point touch, and ca...
Claims
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IPC IPC(8): G06F3/045
CPCG06F3/045G06F3/0412
Inventor 杨松龄
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD