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A kind of manufacturing method of LED display device
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A production method and technology for display devices, which are applied in semiconductor devices, instruments, electrical components, etc., can solve the problem of not producing LED display devices and so on.
Active Publication Date: 2019-08-23
HC SEMITEK ZHEJIANG CO LTD
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Abstract
Description
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However, there is currently no specific technology for making LED display devices.
Method used
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Embodiment 1
[0049] The embodiment of the present invention provides a method for manufacturing an LED display device, see figure 1 , the production method includes:
[0050] Step 101: using a photolithography plate to form a plurality of LED chips with the same color and arranged on the same circuit substrate.
[0051] In this embodiment, the pattern of the photolithography plate is consistent with the positions of a plurality of LED chips, and the color of the LED chips is red, green or blue. The circuit substrate is a flat plate on which circuits are laid. By connecting the LED chips to the circuit substrate, the circuit substrate can be used to control the light emission of the LED chips, thereby realizing the function of the display.
[0052] Optionally, the size of the LED chip can be 20-80 μm, and a red, green and blue three-color display device can be realized through a small-sized LED chip, such as Figure 2a and Figure 2b shown. Among them, 10 is a red LED chip, 20 is a gree...
Embodiment 2
[0123] An embodiment of the present invention provides an LED display device, see Figure 8 , the LED display device includes a circuit substrate 40, and a plurality of LED chips 60 arranged on the circuit substrate 40, the colors of the plurality of LED chips 60 include at least one of red, green and blue, the LED chips 60 and the circuit substrate The lines laid on the 40 are communicated through the connecting bridge 6. The LED chip 60 includes a substrate 4, and an N-type layer, a light-emitting layer, and a P-type layer 3 stacked on the substrate 4 in sequence. In the groove of the N-type layer, an N-type electrode 2 is arranged at the center of the N-type layer, and a P-type electrode 1 is arranged at the edge of the P-type layer.
[0124] Optionally, an insulating layer 5 may be provided on the sidewall of the P-type layer extending to the N-type layer and the sidewall of the P-type layer extending to the substrate 4 .
[0125] Optionally, the insulating layer 5 may be...
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Abstract
The invention discloses an LED (Light Emitting Diode) display device and a manufacturing method thereof and belongs to the technical field of semiconductors. The manufacturing method comprises: forming a plurality of LED chips, which are arranged on the same circuit substrate and have the same color, by utilizing a photomask, wherein a pattern of the photomask is the consistent with the positions of the plurality of LED chips and the color of the LED chips is red, green or blue; sticking the plurality of formed LED chips on the same blue film; carrying out film expansion on the blue film to enable the plurality of LED chips to correspond to corresponding positions of the circuit substrate respectively; fixing the LED chips on the corresponding positions of the circuit substrate respectively by utilizing an adhesive; peeling off the blue film; forming a connecting bridge between an electrode of each LED chip and a line laid at the corresponding position of the circuit substrate. The manufacturing of the LED display device is realized.
Description
technical field [0001] The invention relates to the technical field of semiconductors, in particular to an LED display device and a manufacturing method thereof. Background technique [0002] Liquid crystal displays, active matrix organic light emitting diode panels (Active Matrix / Organic Light Emitting Diode, AMOLED for short), etc. are currently common small-size displays. At present, the common small-sized displays all have the problem of limited brightness, which makes it impossible for people to see the displayed images under strong light. [0003] With the wide application of Light Emitting Diode (LED for short) in the field of display and lighting, a display device composed of micron-scale LED (Micro LED) chips can be used to replace the current common small-size display. Because the display device composed of LED chips has the characteristics of high brightness, people can clearly see the displayed image under strong light. But there is no specific technology for m...
Claims
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Application Information
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