Detection method and detection structure of display backboard
A display backplane and detection method technology, applied in semiconductor/solid-state device testing/measurement, electrical components, circuits, etc., can solve problems such as complicated and inconvenient operation, increased time cost, dead spots, etc., and achieve accurate and efficient detection methods. Time-saving and simple steps
Active Publication Date: 2021-09-28
CHONGQING KONKA PHOTOELECTRIC TECH RES INST CO LTD
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Problems solved by technology
[0003] However, the contact electrode pairs on the display backplane may have dead spots during the manufacturing process, resulting in defects in the display effect of the final display panel. It is complicated and inconvenient to operate by emitting light to judge whether there are dead pixels, and repeated soldering of LED chips increases the difficulty of operation and increases the time cost
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[0032] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] In the existing technology, Micro LED displays are the mainstream of new displays, which have good stability, long life, and advantages in operating temperature, and also inherit the low power consumption, color saturation, and fast response of LEDs. , strong contrast and other advantages, has great application prospects.
[0034] Common ...
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The invention discloses a detection method and a detection structure for a display backboard, wherein the method comprises the steps: the display backboard is provided, wherein the display backboard is provided with a plurality of groups of contact electrode pairs, and each contact electrode pair comprises an input electrode and an output electrode; the detection structure is provided, the detection structure comprises a plurality of light-emitting parts and a plurality of detection circuits, at least one light-emitting part is arranged between every two detection circuits, and the detection circuits are used for conducting electric signals to the light-emitting parts; the detection structure is assembled on the display backboard, so that one detection circuit is connected with the input electrode in one group of contact electrode pairs and the output electrode in the other adjacent group of contact electrode pairs at the same time; a driving electric signal is outputted to the display backboard; and if the light-emitting parts do not emit light, it is determined that the group of contact electrode pairs to which the input electrodes connected with the detection circuits belongs are dead pixels. Whether the display backboard is damaged or not is rapidly judged by observing light emitted by the light-emitting parts.
Description
technical field [0001] The invention relates to the technical field of display devices, in particular to a detection method and a detection structure of a display backplane. Background technique [0002] At present, the use of electronic products in people's daily life is extremely common, and the technology of electronic display screens is constantly being developed and innovated. The maturity of Light Emitting Diode (LED) technology has further promoted the use of display panels, especially the use of Micro LED displays. The use gradually occupies the market. In the prior art, contact electrode pairs are formed on the display backplane, and LED chips are welded on the contact electrode pairs to form a display panel. [0003] However, the contact electrode pairs on the display backplane may have dead spots during the manufacturing process, resulting in defects in the display effect of the final display panel. It is complicated and inconvenient to operate by emitting light...
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Login to View More IPC IPC(8): H01L21/66
CPCH01L22/34H01L22/12
Inventor 王广徐瑞林林建宏
Owner CHONGQING KONKA PHOTOELECTRIC TECH RES INST CO LTD