TW556135B - Dual-sided picture display device - Google Patents

Abstract

A dual-sided picture display device is disclosed, which mainly utilizes the advantage that the light emitted from the OLED display can be displayed on both sides when a translucent cathode is used, or utilizes a special packaging design with a single-sided OLED display. Both need only to have one driving module, and thus, when the driving signal is outputted, the front side (anode) and back side (cathode) both display the same picture at the same time, but only the pattern and text displayed on the back side are opposite to that of the front side in a left-right direction. However, this problem can be solved by software control. Thus, two large display areas can be designed on the same piece of OLED display panel. One (front) side is displayed by anode, and the other (back) side is displayed by cathode.

Description

556135 Description of the invention (1): Background of the invention The present invention relates to a double-sided display screen device, especially a device that can meet the functional requirements of double-sided display of existing mobile phone panels as long as it is driven by a single drive module. The yield rate and assembly man-hours can be relatively improved. At the same time, the module cost is also reduced to improve the competitive advantage of the product. Due to the popularity of mobile phones and the improvement of communication quality, the display screens of mobile phones The evolution of the display to the current stage of dynamic image files is not at the same time, and the requirements for display quality are higher. When the mobile phone display is in use, the power consumption of the mobile phone battery is also one of the requirements. At present, most of the mobile phone display screens have changed from the original single display screen to dual display screens. The larger screen is the main screen and can be used for multi-function transmission and reception display. In addition, the screen is the normal signal display screen, and the display content is mostly signals. Display, caller ID, time, etc. Therefore, in standby mode, only the signal screen is displayed, which can reduce power consumption. However, dual-screen display generally requires dual-drive and independent control of the group, resulting in an increase in the number of driver ICs, and the relative manufacturing cost is increased. The main purpose of the present invention is to solve the above-mentioned traditional defects and avoid

The deficiency exists. The present invention utilizes the principle of self-emission of the LED, so as long as the double-sided electrodes are designed to be transparent, a single driver panel can be used for double-sided display. Wu. Another purpose of the present invention is to display qled Scan on one side and 〇LED on one side, which can be connected by FPC to guide its 1i ne and Data 1i ne to Can be driven by a single drive module

556135 V. Description of the invention (2) Double panel. In order to achieve the above-mentioned object, the double-sided display screen device of the present invention includes one or two organic light emitting diode panels and one or two signal transmission units connected to the above-mentioned one light emitting diode panel. A drive unit is provided on one of the signal transmission units, and when the drive unit outputs a drive signal, one or two organic light emitting diode panels are formed with a main display screen view area and a signal display day view area to present a dual display area. Face display status. The detailed content and technical description of the present invention are described below with reference to the drawings: [Schematic description] Figure 1 is a schematic diagram of the front and back of a single OLED panel of the present invention as a double-sided display module device. Fig. 2 'is a schematic side view of Fig. 1; Fig. 3 'is a schematic diagram of the front and back sides of a two-sided display module device with two OLED panels according to the present invention. Figure 4 is a schematic side view of Figure 3. Fig. 5 'is a schematic side view of the module device for two-sided display of the other two LED panels of the present invention. The double-sided display screen device of the present invention mainly utilizes the self-luminous property of an organic light emitting diode OLED (Organic Light Emitting Diode). When two sides are used as transparent electrodes, the double-sided display screen can be used, so a single driving mode can be used. Group for double-sided display. In this way, the manufacture of OLED panels for double-sided display is the same as that for OLED panels for single-sided display, and only uses a single drive module, so the production cost can be greatly reduced, and at the same time,

556135 V. Description of the invention (3) · The construction time is also relatively reduced. Generally OLED is a self-luminous display. The anode of the OLED is a light-transmitting ITO (indiuroTin Oxide) electrode, and the cathode is a light-impermeable metal electrode. Therefore, when the OLED display emits light, it can only be displayed in the direction of the anode. , So it is displayed on one side. Therefore, when the light-transmitting cathode is used in the present inventive concept, the advantages of 〇LED display- * light can be displayed on both sides at the same time; or the traditional 〇LED single-sided display is used to show the special structure design, both of which only need to use a single Drive module, so when driving signal output, the front (anode) and back (cathode) will display the same screen at the same time, but the image and text displayed on the reverse side are left and right. Reverse 'But this problem can be solved by software control Therefore, on the same oLED ^ display panel, two large display areas can be designed, one side using the front side (anode) display, and the other side using the reverse side (cathode) display. In addition, 'if two ordinary OLED panels are used (only display by anode)', it is also possible to use a flexible (flexible) printed circuit | 卩 1 £ 5 (丨 1316 Printed Circuit) to connect one of them 〇LED scan line (Scan 1 ine) and data (Data 1 ine), led to another OLED, at this time will be able to use a single drive 1C drive dual display panel. Please refer to "shown in Figs. 1 and 2", which is the single 0 LED panel of the present invention for the front and back of the module device for double-sided display and the first! Figure is a schematic side view. Moxibustion is not shown in the figure: In order to achieve the above-mentioned object, the present invention uses a single OLED panel to make a double-sided display screen device. The double-sided display screen device includes at least an organic light-emitting layer 1, which is provided on the aforementioned organic light-emitting layer. 1 Transparent cathode and electrode layer 2 on one side 2 'A transparent anode layer 3 provided on the other side of the organic light emitting layer 1 described above,

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V. Description of the invention (4) The length of the transparent anode layer 3 is longer than that of the organic light emitting layer 1 and the transparent cathode layer 2 described above, and the excess length forms a connection area 3 1 which can be connected to the signal transmission unit 4;

In addition, a transparent cover 5 and a cover 6 made of a transparent glass or plastic substrate are packaged on the transparent cathode layer 2 and the transparent anode layer 3 described above, and are placed at appropriate positions on the surfaces of the cover 5 and the cover 6. A reflective film or light absorbing layer 51, 61 is fixedly installed, and a main display screen view area 62 and a signal display screen are formed on the surface of the cover 5 and the cover 6 not covered by the reflective film or light absorbing layers 51, 61. Viewing area 52. When the organic light-emitting layer 1 emits light, the light sources 7, 8 pass through a transparent cathode layer 2 and a transparent anode layer 3, and then pass through the cover 5 and the cover body 6 without being covered by the main display screen view area 6. 2 and the signal display screen view area 5 2 are projected to present a double-sided display state;

In addition, the signal transmission unit 4 mentioned above can be a single-sided or double-sided moldable (soft) printed circuit! PC or thin-film circuit or cable, or a general PCB circuit board, There is a driving unit 41 on it; when the signal transmission unit 4 is connected to the transparent anode layer 3, the transparent cathode wiring 10 and the transparent anode wiring 101 are connected to the signal transmission unit 4; when the driving unit 41 outputs a driving signal The organic light-emitting layer i is caused to emit light, and the light-emitting light sources 7 and 8 pass through the transparent transparent cathode layer 2 and the transparent anode layer 3, and then pass through the cover 5 and the cover body 6 and the main display screen view area 62 and The view area 5 2 of the signal display screen is projected to present a double-sided display state. Please refer to "shown in Figs. 3 and 4", which are the schematic diagrams of the front and back sides of the two OLED panels of the present invention for a two-sided display module device and the side view of Fig. 3. As shown in the figure: In order to achieve the above-mentioned another object, the present invention will be

Page 7 556135 V. Description of the invention (5) 3 2: The transparent cathode layer 2 is changed to the metal cathode layer 2, so two OLED panels can be used to make 餹 ^ | m m Device 'of which one 0LED panel 20 is a face view area' and the other 0LED panel 30 is a main display screen view area,:! =: Message two: the input unit is connected; when another-the early signal 41 of the signal transmission unit 4 is generated When driving the signal output, the state of the two-sided display screens caused by the two 20 and 30. Unloading the board For μ kiss, please refer to "shown in Figure 5", which is a schematic side view of the module device displayed on the other two 0LED panels of the present invention. As shown in the figure: this embodiment, 3, 4 are the same, the difference is that the signal transmission unit 4-bending value: the two OLED panels 20, 30 form a front and rear close, when the other signal two units When the driving unit 41 on the 4 generates a driving signal output, the two-fixed OLED panels 20 and 30 cause a double-sided display screen state in front and back. Progress 'is that the driving 1C accounts for 20% to 30% of the total cost of the OLED module', so the present invention can reduce the number of driving 1 (: to reduce costs and reduce multiple processes in the manufacturing process. At the same time, users In terms of application, its structural design is simpler than that of the traditional dual module. The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Changes and modifications are covered by the scope of the invention patent.

556135 Brief description of the drawings [Explanation of the drawings] Fig. 1 is a schematic diagram of the front and back sides of a single 0 L E D panel according to the present invention for the two-sided display module assembly. Figure 2 is a schematic side view of Figure 1. FIG. 3 is a schematic diagram of the front and back sides of a two-OLED display mold assembly for two-sided display according to the present invention. Figure 4 is a schematic side view of Figure 3. Fig. 5 is a schematic side view of a module device for two-sided display of two other OLED panels according to the present invention. [Explanation of Symbols in the Drawings] Organic light-emitting layer .............. 1 Transparent cathode layer .............. 2 Metal cathode layer ... .... 2 ^ Transparent anode layer ... 3 signal transmission units ... 4 connection area ......... .. 31 signal transmission unit ......... 4, 4 / drive unit ......... 41 H ^ ........ ......... 5 Cover ... 6 Reflective film or light absorbing layer ... 51, 61 Main display screen Viewing area ......... 62 Signal display screen viewing area ......... 52 Light source ......... 7, 8

556135 Schematic illustration of transparent cathode wiring ............... 0 Transparent anode wiring ... 101 OLED panel ......... ... 20, 30

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Claims (1)

556135 6. Scope of Patent Application 1. A double-sided display day-surface device, which is made of a single OLED panel into a double-sided display device. The device at least includes: an organic light-emitting diode; and a signal connected to the organic light-emitting diode. The transmission unit has a driving unit thereon; when the driving unit outputs a driving signal, the organic light emitting diode is formed with a main display screen viewing area and a signal display screen viewing area to present a double-sided display state. 2. The double-sided display screen device described in item 1 of the scope of the patent application, wherein the signal transmission unit may be a flexible (flexible) printed circuit FPC or a thin film circuit or a cable, or any one of general PCb circuit boards. . 3. The double-sided display screen device described in item 2 of the scope of the patent application, wherein the signal transmission unit may be one of two sides. 4. The double-sided display screen device described in item 1 of the scope of the patent application, wherein the organic light emitting diode includes at least: an organic light emitting layer; a transparent cathode layer provided on one side of the organic light emitting layer; A transparent anode layer provided on the other side of the organic light emitting layer, the length of the transparent anode layer is longer than the organic light emitting layer and the transparent cathode layer, and the excess length forms a connection area; a package is enclosed in the transparent cathode layer and A cover and a cover on the transparent anode layer. A reflective film is provided at an appropriate position on the surface of the cover and the cover. The two cover surfaces are not covered by the reflective film to form a main display screen view area and signal display. Viewport of the screen. Page 11 556135 6. Scope of patent application 5. The double-sided display screen device described in item 4 of the scope of patent application, wherein the cover is transparent. 6. The double-sided display screen device described in item 4 of the scope of patent application, wherein the cover body can be made of any material such as transparent glass or plastic substrate. 7. The double-sided display screen device described in item 4 of the scope of patent application, wherein the reflective film may also be a light absorbing layer. 8. The double-sided display screen device described in item 4 of the scope of patent application, wherein the transparent cathode layer may also be a metal cathode layer. 9. A double-sided display screen device, which is manufactured by using two OLED panels to form a double-sided display device. The device includes at least: two organic light-emitting diodes; a first connected between the two organic light-emitting diodes. A signal transmission unit; a second signal transmission unit connected to any one of the above organic light emitting diodes, having a driving unit thereon; and when the driving unit outputs a driving signal, two organic light emitting diodes are formed with a main display The screen viewport and the signal display screen viewport display a two-sided display state. Page 12