High-density LED display cabinet and display screen based on tft glass substrate

Abstract

The invention relates to a high-density LED display box based on a TFT glass substrate. In the box, pixel units are arranged on the front surface of the TFT substrate, and electrodes of the pixel units are connected to a TFT drive circuit; on the front surface of the TFT substrate and cover the pixel units. In the present invention, in the display box, the edges of the adjacent display units are bonded by using the height difference steps through conductive anisotropic glue; between the adjacent display boxes, the adjacent display units adopt the method of side etching lines or adding conductive glue in the through holes Lead the circuit on the surface of the substrate to the back of the substrate, and use the driver board to control the display pixels to emit light. The pixel pitch can be less than 0.5mm, the minimum can be 0.12, or even smaller, and TFT has a cost advantage, which will greatly reduce the cost and increase the cost. display effect.

Description

technical field [0001] The invention belongs to the technical field of LED display screens, and relates to a hybrid high-density LED display box and a display screen based on a TFT substrate. Background technique [0002] Traditional TFT-LCD display technology is currently mass-produced up to the G11 generation line. Due to the constraints of semiconductor and vacuum processes, high investment costs and high technical thresholds, it is difficult to develop to a higher generation. At the same time, considering factors such as cutting efficiency and cost, the maximum size of the current mass-produced display is 110 inches. [0003] Micro-LED is a new type of display technology, which is also a solid-state self-luminous display. Its structure is simpler than that of OLED. With a pixel pitch of micron level, each pixel can be controlled and driven independently, so that its resolution, brightness, Performance parameters such as contrast ratio and power consumption are quite exc...

AI Technical Summary

Problems solved by technology

However, due to the influence of the line width and spacing of the unit board, the pixel pitch of the current flip-chip LED display can be as small as 0.5mm

Therefore, it is difficult to realize the application of Micro-LED in LED display with the current carrier board

[0005] Using TFT-LCD display control technology, redesigning the pads on the light-emitting surface, including technical parameters such as material and size, and then packaging them with LED packaging technology, can realize the application of LEDs in it. A unified plane will make it impossible to realize the splicing of LEDs

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