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LED matrix device

A matrix and matrix display technology, applied in lighting devices, instruments, electrical digital data processing and other directions, can solve the problem of the light pen unable to circle the background without light spots and so on

Inactive Publication Date: 2008-10-15
鼎丞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide an LED matrix device, aiming to solve the problem that the light pen in the prior art cannot circle the background without light spots

Method used

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] Existing LED matrices have figure 1 and Figure 1A Two, the control methods of these two are different, figure 1 is the column scan method, Figure 1A Is the line scan mode. But both of them display a whole column (row) of m(n) LED display units at a time, and display n(m) columns (rows) in total one column (row) one column (row) column by column (row). The traditional LED display unit, according to the single-color or multi-color LED matrix, has one visible light LED or more than one visible light LED, respectively, as figure 2 and image 3 displayed. In the embodiment of the presen...

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PUM

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Abstract

The invention provides an LED matrix device which is suitable for the photoelectric display field. The device comprises a sequential circuit, a data driving circuit, a scanning driving circuit and an LED matrix. A display unit at the cross-point of the row and the line of the LED matrix comprises one infrared LED and one or more than one visible-light LED. The sequential circuit generates control signals to control the data driving and scanning driving circuits so as to respectively drive the infrared LED and the visible-light LED. Furthermore, the sequential circuit generates a group of signals including the line and row information of the driven infrared LED to provide the information for an external light-pen device to decode the present position of the light-pen. The function of the visible-light LED in the device is the same with that of the existing LED matrix, and the infrared LED part generates the position information required by the light-pen. Generally, the display of the LED is formed by a plurality of LED matrixes which are arranged in series, therefore, the interface of the light-pen of the invention is also provided with the series connecting function.

Description

technical field [0001] The invention belongs to the field of photoelectric display, in particular to an LED matrix device with the function of a light pen. Background technique [0002] LED matrix devices are widely used in large-scale display panels with the unit price reduction and reliability improvement of LEDs. Recently, with the development of organic LED (organic LED) technology, LED matrix devices are also used in small portable products. But the current LED matrix device only has the function of display but not the function of input. [0003] Common display input methods include touch screen and light pen. Regardless of whether the touch screen is capacitive or resistive, the manufacturing cost is relatively expensive, and a touch screen control circuit must be additionally added. And the touch screen must be calibrated after being used for a period of time. The light pen is cheap, and its front end includes a light sensor, which can accept the trigger of the li...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G3/20H05B33/08H05B33/14G06F3/041G06F3/033G06F3/0354G06F3/038H05B44/00
CPCG06F3/0317G09G2300/06G06F3/0386G09G3/32G06F3/03545
Inventor 谢宜轩
Owner 鼎丞科技有限公司