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Backlight lamp panel, backlight module and display device

A backlight and substrate technology, which is applied in the direction of identification devices, static indicators, instruments, etc., can solve the problems of uneven brightness of backlight panels, large voltage or current differences, etc., to reduce internal resistance voltage drop and current differences Reduce and improve the effect of uniformity

Pending Publication Date: 2021-09-21
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present application provides a backlight panel, a backlight module, and a display device, which can solve the problem in the prior art that the voltage or current in different regions of the backlight panel is greatly different, resulting in uneven luminance of the backlight panel

Method used

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  • Backlight lamp panel, backlight module and display device
  • Backlight lamp panel, backlight module and display device
  • Backlight lamp panel, backlight module and display device

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Embodiment Construction

[0027] Next, the technical scheme in the present application embodiment will be described in the present application, and it is understood that the described embodiments are intended to be described herein, not all of the embodiments of the present application. Based on the embodiments in the present application, those skilled in the art do not have all other embodiments obtained by creative labor, all of which are protected by the present application. Furthermore, it should be understood that the specific embodiments described herein are intended to illustrate and explain the present application and is not intended to limit the present application. In the present application, in the case of not explained, the orientation, such as "upper" and "lower", usually refer to the upper and lower and bottoms of the device in actual use or working state, specifically in the drawing direction in the drawings. And "inner" and "outside" are for the contour of the device.

[0028] Embodiment of...

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Abstract

The embodiment of the invention discloses a backlight lamp panel, a backlight module and a display device. The backlight lamp panel comprises a substrate and a light-emitting unit. The substrate is provided with a control circuit, a first power signal line and a second power signal line. The light-emitting unit comprises a plurality of sub light-emitting units, each sub light-emitting unit comprises a light-emitting device, a first control switch and a voltage dividing element which are connected in series between the first power supply signal line and the second power supply signal line, and the control circuit is electrically connected with the first control switches to control the first control switches to be switched on or switched off. The resistance values of the voltage dividing elements of the sub light-emitting units are gradually reduced in the direction from the input end to the output end of the first power signal line. The resistance values of the voltage dividing elements of the sub light-emitting units are gradually reduced in the direction from the input end to the output end of the first power signal line, so that the difference of currents flowing through all the sub light-emitting units is reduced, and the uniformity of the overall light-emitting brightness of the backlight lamp panel is improved.

Description

Technical field [0001] The present application relates to the field of display, particularly to a backlight panel, a backlight module and a display device. Background technique [0002] With the high-order TV market increasingly high quality requirements, enhance the display quality becomes a new demand for the high-order TV, Mini LED (light emitting diode submillimeter) or Micro LED (light emitting diode micro) as a new display technology, brightness, power than an OLED (organic Light emitting diode) have the advantage. Mini-LED / Micro-LED driving current is due to the LED light, and the LED is more sensitive to small changes in the current, a small current variation causes a large change in luminance. In the prior art, when the backlight plate design, different regions of the voltage or current of the backlight panel are quite different, resulting in uneven emission luminance of the backlight panel. Inventive content [0003] Embodiments provide a backlight panel according to...

Claims

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Application Information

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IPC IPC(8): G09F9/33G09F9/30G09G3/32G09G3/34
CPCG09F9/33G09F9/30G09G3/32G09G3/3406G09G2320/0233
Inventor 胡道兵
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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