JP-2026514540-A - Electronic paper screen module

JP2026514540AJP 2026514540 AJP2026514540 AJP 2026514540AJP-2026514540-A

Abstract

This invention provides an electronic paper screen module comprising: a substrate on which a first light-transmitting portion is provided; a circuit board on which at least a portion is laminated on the substrate; and a light-emitting element provided on the circuit board and positioned opposite the location of the first light-transmitting portion, such that emitted light rays can be transmitted through the first light-transmitting portion from one side of the substrate to the other side facing the circuit board. According to this invention, the technical problem of the size and cost of the electronic paper screen increasing due to the installation of LED lamps can be solved.

Inventors

李彦辰
田向
呉兆允
趙建国
候世国

Assignees

漢朔科技股▲ふん▼有限公司

Dates

Publication Date: 20260511
Application Date: 20231120
Priority Date: 20230505

Claims (12)

An electronic paper screen module, A substrate having a first light-transmitting section, A circuit board in which at least some positions are laminated on the substrate, An electronic paper screen module characterized by including a light-emitting element provided on the circuit board, positioned opposite the first light-transmitting element such that the emitted light rays are transmitted through the first light-transmitting element from one side of the board to the other side facing the circuit board.
The present invention further includes an electronic paper film and a protective film made of a light-transmitting material. The electronic paper screen module according to claim 1, characterized in that the substrate, the electronic paper film, and the protective film are arranged in a stacked manner from the side closest to the light-emitting element toward the side away from the light-emitting element.
The electronic paper screen module according to claim 2, characterized in that the electronic paper film is provided with the second light-transmitting portion, and a light-transmitting passage is formed by the first light-transmitting portion, the second light-transmitting portion, and the position of the protective film opposite the second light-transmitting portion.
Between the electronic paper film and the substrate, there are multiple electrical contacts for connecting the electrodes of the substrate and the electrodes of the electronic paper film, respectively. The electronic paper screen module according to claim 2, characterized in that a second light-transmitting portion is provided at the location of at least one of the electrical contacts, and a light-transmitting passage is formed by the first light-transmitting portion, the second light-transmitting portion, and the position of the protective film opposite the second light-transmitting portion.
A first connecting portion, made of a light-transmitting material, is provided between the protective film and the substrate, surrounding the outer periphery of the electronic paper film. The electronic paper screen module according to claim 3, characterized in that the light-transmitting passage is formed by the first light-transmitting portion, the position of the first connection portion facing the first light-transmitting portion, and the position of the protective film facing the first light-transmitting portion.
A second light-transmitting portion is provided at the edge of the electronic paper film, and the light-transmitting passage is formed by the first light-transmitting portion, the second light-transmitting portion, the position of the first connecting portion facing the first light-transmitting portion, and the position of the protective film facing the first light-transmitting portion. The electronic paper screen module according to claim 5, characterized in that, in the direction of emission of the light rays, a first light mixing element for uniformly emitting the light rays is provided downstream of the second light-transmitting portion and a first connecting portion facing the location of the first light-transmitting portion.
The electronic paper screen module according to claim 5 or 6, characterized in that the first connecting portion is made of a translucent or semi-translucent edge-fastening material.
The substrate is provided with a second connecting portion made of a light-transmitting material for fixing the connection position between the circuit board and the substrate. The electronic paper screen module according to claim 5, characterized in that the light-transmitting passage is formed by the position of the first light-transmitting portion and the second connecting portion opposite the first light-transmitting portion.
The light-transmitting passage is connected by the first light-transmitting portion, the position of the second connecting portion facing the first light-transmitting portion, the position of the first connecting portion facing the first light-transmitting portion, and the position of the protective film facing the first light-transmitting portion. The electronic paper screen module according to claim 8, characterized in that, in the direction of emission of the light rays, a second light mixing element for uniformly emitting the light rays is provided downstream of the first connection portion, the second connection portion, and the protective film, which are opposite to the location of the first light-transmitting portion.
The electronic paper screen module according to claim 8 or 9, characterized in that the second connecting portion is made of a light-transmitting or semi-light-transmitting adhesive.
The electronic paper screen module according to claim 1, characterized in that the circuit board is a flexible circuit board that extends to a position overlapping the board and is provided with the light-emitting element.
The electronic paper screen module according to claim 1, characterized in that the circuit board includes a flexible circuit board and a PCB board connected to the board via the flexible circuit board, located in a position overlapping the board, and on which the light-emitting element is provided.

Description

Related applications This application claims priority to the Chinese patent application filed on May 5, 2023, with application number 202321082624.3, and incorporates the contents disclosed in the said patent application as part of this application. This application relates to the field of electronic display technology, and more particularly to electronic paper screen modules. The electronic paper screen module is a display based on electrophoretic display technology. It achieves the effect of displaying an image by applying a driving voltage to each pixel point via a control circuit on the substrate (i.e., a TFT substrate) 100. The application of the illumination element in the electronic paper screen module is expanding to realize various functions such as status display and position notification. As shown in Figures 1 and 2, conventional products often implement functions such as status indication and flashing notifications by mounting LED lamps 200 on a PCB substrate 300 (where the PCB substrate 300 is laminated on the rear surface of the thin-film transistor substrate 100 and connected to the thin-film transistor substrate 100 via a flexible circuit board 400 to enable signal transmission with the electronic paper screen). However, in the case of existing electronic paper screen modules, light does not pass through within the area of the thin-film transistor substrate 100. Therefore, in order to efficiently transmit light rays, the LED lamps 200 must be installed outside the area of the thin-film transistor substrate 100 to avoid light blocking by the thin-film transistor substrate 100. However, this installation configuration inevitably increases the size of the PCB substrate 300, which not only increases the frame size of the electronic paper screen but also increases the cost of the PCB substrate 300. Currently, there is no effective solution to the problem of increased size and cost of electronic paper screens due to the installation of related LED lamps. Therefore, based on the experience and practice gained from many years of work in the relevant industry, the inventor proposes an electronic paper screen module to overcome the shortcomings of existing technologies. The present invention aims to provide an electronic paper screen module that reduces the size of the electronic paper screen and lowers costs by forming a light-transmitting region on the electronic paper screen within the boundaries of the substrate, and by installing LED lamps at positions corresponding to the light-transmitting region, thereby ensuring good display effects even when the LED lamps are located within the boundaries of the substrate. The objective of this application can be achieved by the following technical solution. This application relates to an electronic paper screen module, A substrate having a first light-transmitting section, A circuit board in which at least some positions are laminated on a substrate, The present invention provides an electronic paper screen module including a light-emitting element provided on a circuit board, which is positioned opposite the location of the first light-transmitting element so that the emitted light rays can be transmitted through the first light-transmitting element from one side of the board to the other side facing the circuit board. In one embodiment of the present invention, the electronic paper screen module further includes an electronic paper film and a protective film made of a light-transmitting material. The substrate, electronic paper film, and protective film are laminated in a direction from the side closest to the light-emitting element toward the side away from the light-emitting element. In one embodiment of the present application, a second light-transmitting portion is provided on the electronic paper film, and a light-transmitting passage is formed by the first light-transmitting portion, the second light-transmitting portion, and the position of the protective film opposite the second light-transmitting portion. In one embodiment of the present invention, a plurality of electrical contacts are provided between the electronic paper film and the substrate for connecting the electrodes of the substrate and the electrodes of the electronic paper film, A second light-transmitting portion is provided at the location of at least one electrical contact, and a light-transmitting passage is formed by the first light-transmitting portion, the second light-transmitting portion, and the position of the protective film opposite the second light-transmitting portion. In one embodiment of the present invention, a first connecting portion made of a light-transmitting material is provided between the protective film and the substrate, surrounding the outer periphery of the electronic paper film. A light-transmitting passage is formed by the first light-transmitting portion, the position of the first connecting portion facing the first light-transmitting portion, and the