TWI832261B - Adjustable frame-hiding display device and frame-hiding panel thereof - Google Patents

Abstract

The invention provides a frame-hiding display device and frame-hiding panel thereof. The frame-hiding panel includes a frame regulation and detection layer, an adjustable liquid crystal lens layer and a control circuit. The frame regulation and detection layer includes a frame detection circuit for detecting a frame of a display panel. The control circuit learns the position of the frame through the frame detection circuit. The control circuit controls the adjustable liquid crystal lens layer disposed on the display panel according to the position of the frame, so as to visually thin or hide the frame of the display panel. The first terminal of a control switch in the frame regulation and detection layer is coupled to a data driving circuit of the control circuit through a data line. The second terminal of the control switch is coupled to a corresponding liquid crystal electrode of the adjustable liquid crystal lens layer.

Description

Adjustable frame hiding display device and frame hiding plate

The present invention relates to a display device, and in particular to an adjustable frame hidden display device and its frame hidden plate.

Narrow bezel displays are a product design trend. For multi-monitor splicing applications (such as video walls), the narrower the monitor bezel, the more beautiful the display effect will be. However, solid refinement of borders has its limitations.

The present invention provides a frame-hiding display device and a frame-hiding plate thereof to visually refine or hide the frame of a display panel.

In an embodiment of the present invention, the above-mentioned frame hiding plate is configured on the display panel to visually refine or hide the frame of the display panel. The frame hidden board includes a frame control and detection layer, an adjustable liquid crystal lens layer and a control circuit. The frame control and detection layer includes multiple frame detection circuits for detecting the frame of the display panel. The adjustable liquid crystal lens layer is configured on the display panel. The control circuit is coupled to the frame detection circuit and the adjustable liquid crystal lens layer. The control circuit learns the position of the frame through these frame detection circuits. The control circuit controls the lens characteristics of the adjustable liquid crystal lens layer according to the position of the frame to visually refine or hide the frame of the display panel. Among them, the control circuit includes a data drive circuit, and the frame control and detection layer also includes a plurality of control switches. A first end of any one of these control switches is coupled to the data driving circuit through a data line. The second end of any one of these control switches is coupled to a corresponding liquid crystal electrode among the plurality of liquid crystal electrodes of the adjustable liquid crystal lens layer.

In an embodiment of the present invention, the above-mentioned frame-hiding display device includes a display panel and a frame-hiding plate. The border hiding plate is configured on the display panel to visually refine or hide the border of the display panel. The frame hidden board includes a frame control and detection layer, an adjustable liquid crystal lens layer and a control circuit. The frame control and detection layer includes multiple frame detection circuits for detecting the frame of the display panel. The adjustable liquid crystal lens layer is arranged on the display panel. The control circuit is coupled to the frame detection circuit and the adjustable liquid crystal lens layer. The control circuit learns the position of the frame through these frame detection circuits. The control circuit controls the lens characteristics of the adjustable liquid crystal lens layer according to the position of the frame to visually refine or hide the frame of the display panel. Among them, the control circuit includes a data drive circuit, and the frame control and detection layer also includes a plurality of control switches. A first end of any one of these control switches is coupled to the data driving circuit through a data line. The second end of any one of these control switches is coupled to a corresponding liquid crystal electrode among the plurality of liquid crystal electrodes of the adjustable liquid crystal lens layer.

Based on the above, the frame hiding display device and its frame hiding plate according to the embodiments of the present invention can detect the frame position of the display panel. The control circuit controls the lens characteristics of the adjustable liquid crystal lens layer according to the position of the frame, so that the adjustable liquid crystal lens layer extends the edge image displayed on the display panel between the viewer and the frame. Therefore, the border-hiding panel can adaptively visually refine (or hide) the border of the display panel.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

The word "coupling (or connection)" used throughout the specification of this case (including the scope of the patent application) can refer to any direct or indirect connection means. For example, if a first device is coupled (or connected) to a second device, it should be understood that the first device can be directly connected to the second device, or the first device can be connected through other devices or other devices. A connection means is indirectly connected to the second device. The terms "first" and "second" mentioned in the full text of the specification of this case (including the scope of the patent application) are used to name elements or to distinguish different embodiments or scopes, and are not used to limit the number of elements. The upper or lower limits are not used to limit the order of components. In addition, wherever possible, elements/components/steps with the same reference numbers are used in the drawings and embodiments to represent the same or similar parts. Elements/components/steps using the same numbers or using the same terms in different embodiments can refer to the relevant descriptions of each other.

FIG. 1 is a schematic cross-sectional view of a frame-hiding display device 100 according to an embodiment of the present invention. The frame-hiding display device 100 shown in FIG. 1 includes a display panel 110 and a frame-hiding plate 120 . The display panel 110 at least includes a display area 111 and a frame 112 . This embodiment does not limit the implementation details of the display panel 110 . For example, in some embodiments, the display panel 110 may be a self-luminous display panel, such as a micro-LED display panel, an organic light-emitting diode (OLED) display panel, or other self-luminous display panels. panel. In other embodiments, the display panel 110 may be a non-self-luminous display panel, such as a liquid crystal display panel, an electronic paper (e-paper) display panel, or other non-self-luminous display panel.

The frame hidden plate 120 is disposed on the display panel 110 . The viewer 10 can view the image displayed in the display area 111 through the frame hidden panel 120 . In addition, the frame hiding plate 120 can extend the edge image displayed by the display panel 110 between the viewer 10 and the frame 112 (as shown in FIG. 1 ), so as to visually refine (or hide) the frame of the display panel 110 112.

FIG. 2 is a schematic cross-sectional view of the display panel 110 and the frame hidden plate 120 according to an embodiment of the present invention. In the embodiment shown in FIG. 2 , the display panel 110 is, for example, a liquid crystal display panel. The liquid crystal display panel may be a well-known liquid crystal display panel or other liquid crystal display panels. For the display panel 110 and the frame hiding plate 120 shown in FIG. 1 , please refer to the relevant description of the display panel 110 and the frame hiding plate 120 shown in FIG. 2 , and/or for the display panel 110 and the frame hiding plate 120 shown in FIG. 2 , please refer to FIG. Relevant description of the display panel 110 and the frame hidden panel 120 shown in 1.

The frame hidden panel 120 shown in FIG. 2 includes an adjustable liquid crystal lens layer 121, a frame control and detection layer 122, and a control circuit 123. The adjustable liquid crystal lens layer 121 is disposed above the display panel 110 . The liquid crystal lens layer 121 includes a plurality of liquid crystal electrodes (control electrodes), such as the upper liquid crystal electrode E21 and the lower liquid crystal electrode E22 shown in FIG. 2 . The upper liquid crystal electrode E21 and the lower liquid crystal electrode E22 form a liquid crystal capacitor. The number, position and/or geometric shape of the liquid crystal electrodes of the liquid crystal lens layer 121 can be determined according to the actual design. The control circuit 123 is coupled to the adjustable liquid crystal lens layer 121 . For example (but not limited to this), the control circuit 123 is coupled to the upper liquid crystal electrode E21. The control circuit 123 is also coupled to the first terminal of the driving circuit DC2. The second terminal of the driving circuit DC2 is coupled to the lower liquid crystal electrode E22. The control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 through multiple liquid crystal electrodes (such as the upper liquid crystal electrode E21 and the lower liquid crystal electrode E22 shown in FIG. 2), thereby adjusting the light trace in the adjustable liquid crystal lens layer 121. path, so that the viewer 10 can view the virtual image located in the border 112 area. Therefore, the adjustable liquid crystal lens layer 121 can visually refine or hide the frame 112 of the display panel 110 .

Please refer to Figure 1 and Figure 2. The frame control and detection layer 122 includes a plurality of frame detection circuits, such as the frame detection circuit FD2 shown in FIG. 2 . The control circuit 123 is coupled to the frame detection circuits of the frame control and detection layer 122 . These frame detection circuits can detect the frame 112 of the display panel 110 . In detail. The control circuit 123 can detect light from the display area 111 of the display panel 110 through these frame detection circuits. For example, the control circuit 123 can detect the distribution state of the bright and dark boundaries of the display area 111 through these frame detection circuits, and then determine/learn the position of the frame 112 . Generally speaking, the frame 112 does not emit light or transmit light. Therefore, these frame detection circuits can detect the position and size (width) of the frame 112 . The control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 according to the position of the frame 112 to visually refine or hide the frame 112 of the display panel 110 .

FIG. 3 is a circuit block schematic diagram of a frame hidden panel 120 according to an embodiment of the present invention. Figure 3 illustrates m*n lens adjustment circuits, such as the lens adjustment circuits LC3(1,1), LC3(1,n), LC3(m,1) and LC3(m,n) shown in Figure 3. Among them, m and n are arbitrary integers determined according to the actual design. In the embodiment shown in FIG. 3 , the lens adjustment circuit LC3(1,1) includes a control switch M1 and a liquid crystal capacitor C1. Other lens adjustment circuits shown in Figure 3 (such as lens adjustment circuits LC3(1,n), LC3(m,1) and LC3(m,n)) can refer to the frame detection circuit FD3(1,1) shown in Figure 3 The relevant explanations are further analogized, so they will not be repeated.

In the lens adjustment circuit LC3(1,1) shown in FIG. 3 , the first end of the control switch M1 is coupled to the corresponding data line S1 of the frame hidden plate 120 , and the control end of the control switch M1 is coupled to the frame hidden plate 120 Scan line G1. The control switch M1 shown in FIG. 3 can be referred to the relevant description of the driving circuit DC2 shown in FIG. 2 , or the driving circuit DC2 shown in FIG. 2 can be referred to the relevant description of the control switch M1 shown in FIG. 3 . The first terminal of the liquid crystal capacitor C1 is coupled to the second terminal of the control switch M1. That is, the second end of the control switch M1 is coupled to a corresponding liquid crystal electrode among the plurality of liquid crystal electrodes of the adjustable liquid crystal lens layer 121 . The second terminal of the liquid crystal capacitor C1 is coupled to a reference voltage (such as ground voltage or other fixed voltage). The liquid crystal capacitor C1 shown in Figure 3 can refer to the relevant description of the liquid crystal capacitor formed by the upper liquid crystal electrode E21 and the lower liquid crystal electrode E22 shown in Figure 2, or the liquid crystal formed by the upper liquid crystal electrode E21 and the lower liquid crystal electrode E22 shown in Figure 2. For the capacitor, please refer to the relevant description of the liquid crystal capacitor C1 shown in Figure 3 .

In the embodiment shown in FIG. 3 , the control circuit 123 includes a data driving circuit 310 , a scan driving circuit 320 , a reset circuit 330 and a detection circuit 340 . The detection circuit 340 is coupled to a plurality of detection lines of the frame hidden plate 120, such as the detection lines D1˜Dn shown in FIG. 3 . The data driving circuit 310 is coupled to a plurality of data lines of the frame hidden plate 120, such as the data lines S1˜Sn shown in FIG. 3 . Therefore, the first terminal of the control switch M1 can be coupled to the data driving circuit 310 through the data line S1. The scan driving circuit 320 is coupled to a plurality of scan lines of the frame hidden plate 120, such as the scan lines G1˜Gm shown in FIG. 3 . Based on the scanning timing of the scan lines G1˜Gm by the scan drive circuit 320, the data drive circuit 310 can control the liquid crystal capacitance of each of the lens adjustment circuits LC3(1,1)˜LC3(m,n), thereby controlling the adjustable liquid crystal lens. Lens properties of layer 121. Therefore, the liquid crystal lens layer 121 can extend the edge image displayed by the display panel 110 between the viewer 10 and the frame 112 (as shown in FIG. 1 ), so as to visually refine (or hide) the frame of the display panel 110 112.

Figure 3 shows m*n frame detection circuits, such as the frame detection circuits FD3(1,1), FD3(1,n), FD3(m,1) and FD3(m,n) shown in Figure 3 . In the embodiment shown in FIG. 3 , the frame detection circuit FD3(1,1) includes a photosensitive transistor M2 and a detection capacitor C2. Other frame detection circuits shown in Figure 3 (such as frame detection circuits FD3(1,n), FD3(m,1) and FD3(m,n)) can refer to the correlation of the frame detection circuit FD3(1,1) Explanation and further analogy will not be repeated.

In the frame detection circuit FD3(1,1) shown in FIG. 3, the first end of the detection capacitor C2 is coupled to the reset circuit 330 to receive the reset voltage As_Det. The second terminal of the detection capacitor C2 is coupled to a reference voltage (such as ground voltage or other fixed voltage). The reset circuit 330 provides the reset voltage As_Det to the detection capacitor C2 during the reset period. After the reset period ends, the connection between the reset circuit 330 and the detection capacitor C2 is turned off. The first terminal of the photosensitive transistor M2 is coupled to the first terminal of the detection capacitor C2. The light irradiated on the photosensitive transistor M2 will affect the amount of leakage charge (leakage rate) flowing from the detection capacitor C2 through the photosensitive transistor M2. The frame detection circuit FD2 shown in Figure 2 can refer to the relevant description of the frame detection circuit FD3(1,1) (or photosensitive transistor M2) shown in Figure 3, or the photosensitive transistor M2 shown in Figure 3 can refer to the description in Figure 2 Shows the relevant description of the frame detection circuit FD2.

The second terminal of the photosensitive transistor M2 is coupled to the detection circuit 340 through the detection line D1. The control terminal of the photosensitive transistor M2 is coupled to the scan line G1 of the frame hidden plate 120 . Based on the scanning timing of the scan lines G1˜Gm by the scan driving circuit 320, the detection circuit 340 can detect the charge amount of each detection capacitor of the frame detection circuits FD3(1,1)˜FD3(m,n), Then, the position and size (width) of the border 112 are detected.

FIG. 4 is a schematic diagram of signal waveforms of scanning lines G1 to Gm according to an embodiment of the present invention. The horizontal axis shown in Figure 4 represents time. FIG. 4 illustrates multiple frame periods, such as frame period F41 and frame period F42 shown in FIG. 4 . Please refer to Figure 3 and Figure 4. In each frame period, the scan driving circuit 320 may perform scanning operations on the scan lines G1 to Gm (as shown in FIG. 4 ). In a frame period (reset period, such as frame period F41), the reset circuit 330 provides the reset voltage As_Det to the detection capacitors (such as detection capacitors) of the frame detection circuits FD3(1,1)˜FD3(m,n). Measure capacitance C2). After the reset period ends, the reset circuit 330 stops providing the reset voltage As_Det, for example, the connection between the reset circuit 330 and the detection capacitor C2 is turned off.

After the reset period (eg, frame period F41) ends, a period of exposure time passes and the detection period (eg, frame period F42) is entered. During the detection period, the detection circuit 340 can detect the charge amount of each detection capacitor of the frame detection circuits FD3(1,1)˜FD3(m,n). For example, assuming that the frame detection circuit FD3(1,1) is located above the display area 111 of the display panel 110, the light from the display area 111 will illuminate the photosensitive transistor M2 of the frame detection circuit FD3(1,1), causing the photosensitive Transistor M2 leaks the charge of detection capacitor C2. Assume that the frame detection circuit FD3(1,1) is located above the frame 112 of the display panel 110. There is no light in the frame 112, so the photosensitive transistor M2 has almost no charge leakage from the detection capacitor C2.

Please refer to Figure 1 and Figure 2. The control circuit 123 can detect the position and size (width) of the frame 112 of the display panel 110 through the frame detection circuits FD3(1,1)˜FD3(m,n) of the frame control and detection layer 122. Based on the position of the frame 112, the control circuit 123 can define an image extension area in the adjustable liquid crystal lens layer 121, such as the image extension area 124 shown in FIG. 1. The image extension area 124 overlaps at least part (or even all) of the frame 112 . The control circuit 123 can control a plurality of liquid crystal electrodes in the image extension area 124 of the adjustable liquid crystal lens layer 121 to extend the edge image displayed on the display panel 110 in the image extension area 124 .

In some embodiments, the control circuit 123 can define an edge area of the original image based on the position and size of the frame 112 , and then the control circuit 123 can scale down the edge area of the original image to generate an image to be displayed on the display panel 110 . Shrink image. When the display panel 110 displays the reduced image, the control circuit 123 can control a plurality of liquid crystal electrodes in the image extension area 124 of the adjustable liquid crystal lens layer 121 to adjust the edge of the reduced image displayed on the display panel 110 The image is extended in the image extension area 124 (as shown in Figure 1).

In some embodiments, the control circuit 123 can add an additional image corresponding to the frame 112 of the display panel 110 to the edge of the original image to generate an added image to be displayed on the display panel 110 . When the display panel 110 displays the added image, the control circuit 123 can control a plurality of liquid crystal electrodes in the image extension area 124 of the adjustable liquid crystal lens layer 121 to extend the additional portion of the added image displayed by the display panel 110 . The image is extended in the image extension area 124.

FIG. 5 is a circuit block diagram of a frame hidden plate 120 according to another embodiment of the present invention. For the display panel 110 and the frame hiding plate 120 shown in FIG. 5 , reference can be made to the relevant descriptions of the display panel 110 and the frame hiding plate 120 shown in FIG. 1 or 2 and by analogy, so the details will not be described again. In the embodiment shown in FIG. 5 , the frame hidden panel 120 further includes an eye tracker 125 . The eye tracker 125 is coupled to the control circuit 123 of the frame hidden panel 120 . The eye tracker 125 can detect the height and direction of the viewer's 10 eyes. The control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 based on the height and direction of the viewer's 10 eyes, so that the viewer 10 can see the best narrow-frame viewing angle at different positions and angles.

6A and 6B are schematic cross-sectional views of the adjustable liquid crystal lens layer 121 according to an embodiment of the present invention. 6A is a schematic cross-sectional view of the image extension area 124 of the adjustable liquid crystal lens layer 121, and FIG. 6B is a schematic cross-sectional view of the non-image extension area of the adjustable liquid crystal lens layer 121. The adjustable liquid crystal lens layer 121 includes at least one upper liquid crystal electrode (eg, upper liquid crystal electrode E60) and a plurality of lower liquid crystal electrodes (eg, lower liquid crystal electrodes E61, E62, E63, E64, E65, E66, E67, E68, E69, E610, E611 and E612).

Based on the position of the frame 112 of the display panel 110, the control circuit 123 can define the image extension area 124 in the adjustable liquid crystal lens layer 121. Referring to FIG. 6A , based on the control of the control circuit 123 , the voltage difference between the upper liquid crystal electrode E60 and the lower liquid crystal electrodes E61 to E66 in the image extension area 124 presents an increasing distribution. For example (but not limited to this), the voltage of the upper liquid crystal electrode E60 may be 0 V, and the voltages of the lower liquid crystal electrodes E61 to E66 may be 10 V, 8 V, 6 V, 4 V, 2 V, and 0 V respectively. Figure 6A depicts equivalent lens line ELL61. Therefore, the control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 so that the image extension area 124 has the function of a convex lens, so that the edge image of the display panel 110 can be extended in the image extension area 124 .

Please refer to FIG. 6B . Based on the control of the control circuit 123 , the voltage difference between the upper liquid crystal electrode E60 and the lower liquid crystal electrodes E67 - E612 outside the image extension area 124 is a low voltage difference that is not enough to affect the liquid crystal. For example (but not limited to this), the voltage of the upper liquid crystal electrode E60 and the lower liquid crystal electrodes E67 to E612 may be 0 V. Figure 6B illustrates equivalent lens line ELL62. Therefore, the control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 so that the non-image extension area has the function of a planar lens, so that the image of the display panel 110 can pass through the adjustable liquid crystal lens layer 121 .

FIG. 7 is a schematic cross-sectional view of the image extension area 124 of the adjustable liquid crystal lens layer 121 according to another embodiment of the present invention. The adjustable liquid crystal lens layer 121 shown in FIG. 7 includes a plurality of upper liquid crystal electrodes (such as upper liquid crystal electrodes EU71, EU72, EU73, EU74, EU75 and EU76) and a plurality of lower liquid crystal electrodes (such as lower liquid crystal electrodes EL71, EL72, EL73, EL74, EL75 and EL76). In the vertical projection of the adjustable liquid crystal lens layer 121, any one of the upper liquid crystal electrodes EU71 to EU76 is located between two of the lower liquid crystal electrodes EL71 to EL76, as shown in FIG. 7 .

Based on the position of the frame 112 of the display panel 110, the control circuit 123 can define the image extension area 124 in the adjustable liquid crystal lens layer 121. Based on the control of the control circuit 123, the voltage difference between the upper liquid crystal electrodes EU71-EU76 and the lower liquid crystal electrodes EL71-EL76 in the image extension area 124 is a high voltage difference sufficient to affect the liquid crystal. For example (but not limited to this), the voltage of the upper liquid crystal electrodes EU71 to EU76 may be 0 V, and the voltage of the lower liquid crystal electrodes EL71 to EL76 may be 10 V. Figure 7 depicts the equivalent lens line ELL7. Therefore, the control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 so that the image extension area 124 has the function of a triangular lens, so that the edge image of the display panel 110 can be extended in the image extension area 124 . Based on the control of the control circuit 123 , the voltage difference between the upper liquid crystal electrode and the lower liquid crystal electrode outside the image extension area 124 is a low voltage difference that is not enough to affect the liquid crystal. For example (but not limited to this), the voltage of the upper liquid crystal electrode and the lower liquid crystal electrode outside the image extension area 124 may be 0 V.

FIG. 8 is a schematic cross-sectional view of the image extension area 124 of the adjustable liquid crystal lens layer 121 according to another embodiment of the present invention. The adjustable liquid crystal lens layer 121 shown in FIG. 8 includes at least one first lower liquid crystal electrode (such as lower liquid crystal electrode EL80) and a plurality of second lower liquid crystal electrodes (such as lower liquid crystal electrodes EL81, EL82, EL83, EL84, EL85 and EL86). . The lower liquid crystal electrodes EL81 to EL86 are arranged between the liquid crystal (liquid crystal represented by an oval shape) of the adjustable liquid crystal lens layer 121 and the lower liquid crystal electrode EL80, as shown in FIG. 8 .

Based on the position of the frame 112 of the display panel 110, the control circuit 123 can define the image extension area 124 in the adjustable liquid crystal lens layer 121. Based on the control of the control circuit 123 , the voltage difference between the lower liquid crystal electrode EL80 and the lower liquid crystal electrodes EL81 - EL86 in the image extension area 124 is a high voltage difference sufficient to affect the liquid crystal. For example (but not limited to this), the voltage of the lower liquid crystal electrode EL80 may be 0 V, and the voltage of the lower liquid crystal electrodes EL81˜EL86 may be 10 V. Figure 8 depicts the equivalent lens line ELL8. Therefore, the control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 so that the image extension area 124 has the function of a triangular lens, so that the edge image of the display panel 110 can be extended in the image extension area 124 . Based on the control of the control circuit 123, the voltage difference between the first lower liquid crystal electrode and the second lower liquid crystal electrode outside the image extension area 124 is a low voltage difference that is not enough to affect the liquid crystal. For example (but not limited to this), the voltage of the first lower liquid crystal electrode and the second lower liquid crystal electrode outside the image extension area 124 may be 0 V.

FIG. 9 is a schematic cross-sectional view of the image extension area 124 of the adjustable liquid crystal lens layer 121 according to yet another embodiment of the present invention. The adjustable liquid crystal lens layer 121 shown in FIG. 9 includes a first upper liquid crystal electrode (such as upper liquid crystal electrodes EU191, EU192, EU193, EU194 and EU195), a second upper liquid crystal electrode (such as upper liquid crystal electrodes EU291, EU292, EU293, EU294, EU295 and EU296) and lower liquid crystal electrodes (such as lower liquid crystal electrodes EL91, EL92, EL93, EL94 and EL95). The upper liquid crystal electrodes EU291 to EU296 are arranged between the liquid crystal of the adjustable liquid crystal lens layer 121 (the liquid crystal is represented by an oval shape) and the upper liquid crystal electrodes EU191 to EU195, and the liquid crystal of the adjustable liquid crystal lens layer 121 is arranged between the upper liquid crystal electrode EU291 ~Between EU296 and the lower liquid crystal electrodes EL91~EL95, as shown in Figure 9.

Based on the position of the frame 112 of the display panel 110, the control circuit 123 can define the image extension area 124 in the adjustable liquid crystal lens layer 121. Based on the control of the control circuit 123 , the voltage difference between the upper liquid crystal electrodes EU191 to EU195 and the upper liquid crystal electrodes EU291 to EU296 in the image extension area 124 is a high voltage difference sufficient to affect the liquid crystal, and the upper liquid crystal in the image extension area 124 The voltage differences between the electrodes EU291 to EU296 and the lower liquid crystal electrodes EL91 to EL95 present an increasing distribution. For example (but not limited to this), the voltages of the upper liquid crystal electrodes EU191~EU195 are 15 V, 10 V, 10 V, 7 V and 5 V respectively, the voltages of the upper liquid crystal electrodes EU291~EU296 can be -5 V, and The voltages of the lower liquid crystal electrodes EL91 to EL95 are 10 V, 8 V, 6 V, 4 V and 2 V respectively. Figure 9 illustrates equivalent lens lines ELL91 and ELL92. Therefore, the control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 so that the image extension area 124 has the functions of a triangular lens (equivalent lens line ELL91) and a convex lens (equivalent lens line ELL92), so that the display panel 110 The edge image may be extended in the image extension area 124 . Based on the control of the control circuit 123, the voltage difference between the first upper liquid crystal electrode and the second upper liquid crystal electrode outside the image extension area 124 is a low voltage difference that is not enough to affect the liquid crystal, and the voltage difference between the second upper liquid crystal electrode outside the image extension area 124 and The voltage difference between the liquid crystal electrode and the lower liquid crystal electrode is the low voltage difference. For example (but not limited to this), the voltage of the first upper liquid crystal electrode, the second upper liquid crystal electrode and the lower liquid crystal electrode outside the image extension area 124 may be 0 V.

FIG. 10 is a schematic cross-sectional view of the image extension area 124 of the adjustable liquid crystal lens layer 121 according to another embodiment of the present invention. The adjustable liquid crystal lens layer 121 shown in FIG. 10 includes at least one first upper liquid crystal electrode (such as upper liquid crystal electrode EU100), and a plurality of second upper liquid crystal electrodes (such as upper liquid crystal electrodes EU101, EU102, EU103, EU104, EU105 and EU106). and a plurality of lower liquid crystal electrodes (such as lower liquid crystal electrodes EL101, EL102, EL103, EL104 and EL105). The upper liquid crystal electrodes EU101 to EU106 are arranged between the liquid crystal of the adjustable liquid crystal lens layer 121 (the liquid crystal is represented by an oval) and the upper liquid crystal electrode EU100, and the liquid crystal of the adjustable liquid crystal lens layer 121 is arranged between the upper liquid crystal electrodes EU101 to EU106. and the lower liquid crystal electrodes EL101 to EL105, as shown in Figure 10.

Based on the position of the frame 112 of the display panel 110, the control circuit 123 can define the image extension area 124 in the adjustable liquid crystal lens layer 121. Based on the control of the control circuit 123 , the voltage difference between the upper liquid crystal electrode EU100 and the upper liquid crystal electrodes EU101 - EU106 in the image extension area 124 is a high voltage difference sufficient to affect the liquid crystal, and the voltage difference between the upper liquid crystal electrode EU101 in the image extension area 124 The voltage difference between ~EU106 and the lower liquid crystal electrodes EL101~EL105 shows an increasing distribution. For example (but not limited to this), the voltage of the upper liquid crystal electrode EU100 is 10 V, the voltage of the upper liquid crystal electrodes EU101~EU106 can be 0 V, and the voltages of the lower liquid crystal electrodes EL101~EL105 are 10 V, 8 V, and 6V, 4V and 2V. Figure 10 illustrates equivalent lens lines ELL101 and ELL102. Therefore, the control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 so that the image extension area 124 has the functions of a triangular lens (equivalent lens line ELL101) and a convex lens (equivalent lens line ELL102), so that the display panel 110 The edge image may be extended in the image extension area 124 . Based on the control of the control circuit 123, the voltage difference between the first upper liquid crystal electrode and the second upper liquid crystal electrode outside the image extension area 124 is a low voltage difference that is not enough to affect the liquid crystal, and the voltage difference between the second upper liquid crystal electrode outside the image extension area 124 and The voltage difference between the liquid crystal electrode and the lower liquid crystal electrode is also low enough to affect the liquid crystal. For example (but not limited to this), the voltage of the first upper liquid crystal electrode, the second upper liquid crystal electrode and the lower liquid crystal electrode outside the image extension area 124 may be 0 V.

According to different design requirements, the above control circuit 123, data driver circuit 310, scan driver circuit 320, reset circuit 330 and/or detection circuit 340 can be implemented in hardware or firmware. , software (ie, program) or a combination of more of the above three.

In terms of hardware, the control circuit 123, the data driver circuit 310, the scan driver circuit 320, the reset circuit 330 and/or the detection circuit 340 can be implemented as logic circuits on integrated circuits. The related functions of the control circuit 123, the data driving circuit 310, the scan driving circuit 320, the reset circuit 330 and/or the detection circuit 340 can use hardware description languages (such as Verilog HDL or VHDL) or other suitable programming language to implement as hardware. For example, the related functions of the control circuit 123, the data driving circuit 310, the scan driving circuit 320, the reset circuit 330 and/or the detection circuit 340 can be implemented in one or more controllers, microcontrollers, microcontrollers, etc. Processor, Application-specific integrated circuit (ASIC), digital signal processor (DSP), Field Programmable Gate Array (FPGA) and/or other processing units Various logic blocks, modules and circuits in .

In terms of software and/or firmware, the related functions of the control circuit 123, the data driver circuit 310, the scan driver circuit 320, the reset circuit 330 and/or the detection circuit 340 can be implemented as programming code (programming). codes). For example, general programming languages (such as C, C++ or combination language) or other suitable programming languages are used to implement the above control circuit 123, data driving circuit 310, scan driving circuit 320, reset circuit 330 and/or ) detection circuit 340. The programming code can be recorded/stored in a "non-transitory computer readable medium". In some embodiments, the non-transitory computer-readable media includes, for example, read only memory (ROM), tape, disk, card, semiconductor memory, Programmed logic circuits and/or storage devices. A central processing unit (CPU), controller, microcontroller or microprocessor can read and execute the programming code from the non-transitory computer-readable medium, thereby realizing the above control circuit 123, The data driving circuit 310, the scan driving circuit 320, the reset circuit 330 and/or the detection circuit 340 have related functions.

In summary, the frame-hiding display device 100 and its frame-hiding plate 120 described in the above embodiments can detect the position and/or size of the frame 112 of the display panel 110 . The control circuit 123 can control the lens characteristics of the adjustable liquid crystal lens layer 121 according to the position of the frame, so that the adjustable liquid crystal lens layer 121 extends the edge image displayed on the display panel 110 between the viewer 10 and the frame 112 . Therefore, the frame hiding panel 120 can adaptively visually refine (or hide) the frame 112 of the display panel 110 .

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

10: viewers 100: Frame hidden display device 110: Display panel 111: Display area 112: Border 120: Border hidden board 121: Adjustable liquid crystal lens layer 122: Border control and detection layer 123: Control circuit 124: Image extension area 125: Eye Tracker 310: Data drive circuit 320: Scan driver circuit 330: Reset circuit 340: Detection circuit As_Det: reset voltage C1: Liquid crystal capacitor C2: Detection capacitor D1, Dn: detection line DC2: drive circuit E21, E60, EU71, EU72, EU73, EU74, EU75, EU76, EU191, EU192, EU193, EU194, EU195, EU291, EU292, EU293, EU294, EU295, EU296, EU100, EU101, EU102, EU103, EU104, EU105, EU106: Upper LCD electrode E22, E61, E62, E63, E64, E65, E66, E67, E68, E69, E610, E611, E612, EL71, EL72, EL73, EL74, EL75, EL76, EL80, EL81, EL82, EL83, EL84, EL85, EL86, EL91, EL92, EL93, EL94, EL95, EL101, EL102, EL103, EL104, EL105: lower liquid crystal electrode ELL61, ELL62, ELL7, ELL8, ELL91, ELL92, ELL101, ELL102: equivalent lens line F41, F42: frame period FD2, FD3(1,1), FD3(1,n), FD3(m,1), FD3(m,n): Frame detection circuit G1, Gm: scan line LC3(1,1), LC3(1,n), LC3(m,1), LC3(m,n): Lens adjustment circuit M1: control switch M2: Photosensitive transistor S1, Sn: data line

Figure 1 is a schematic cross-sectional view of a frame-hiding display device according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of a display panel and a frame hidden plate according to an embodiment of the present invention. FIG. 3 is a circuit block schematic diagram of a frame hidden board according to an embodiment of the present invention. FIG. 4 is a schematic diagram of the signal waveform of the scan line according to an embodiment of the present invention. FIG. 5 is a circuit block diagram of a frame hidden board according to another embodiment of the present invention. 6A and 6B are schematic cross-sectional views of an adjustable liquid crystal lens layer according to an embodiment of the present invention. 7 is a schematic cross-sectional view of the image extension area of the adjustable liquid crystal lens layer according to another embodiment of the present invention. 8 is a schematic cross-sectional view of the image extension area of the adjustable liquid crystal lens layer according to another embodiment of the present invention. 9 is a schematic cross-sectional view of the image extension area of the adjustable liquid crystal lens layer according to yet another embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of the image extension area of the adjustable liquid crystal lens layer according to another embodiment of the present invention.

10: viewers 100: Frame hidden display device 110: Display panel 111: Display area 112: Border 120: Border hidden board 124: Image extension area

Claims (10)

A frame hidden board, configured on a display panel to visually refine or hide a frame of the display panel, the frame hidden board includes: a frame control and detection layer, including a plurality of frame detection circuits , for detecting the frame of the display panel; an adjustable liquid crystal lens layer for disposing on the display panel; and a control circuit coupled to the frame detection circuits and the adjustable liquid crystal lens layer, The control circuit learns a position of the frame through the frame detection circuits, and controls a lens characteristic of the adjustable liquid crystal lens layer according to the position of the frame to visually refine or hide the display. The frame of the panel, the control circuit includes a data drive circuit, the frame control and detection layer also includes a plurality of control switches, a first end of any one of the control switches is coupled to the data drive circuit through a data line circuit, and a second terminal of any one of the control switches is coupled to a corresponding liquid crystal electrode among a plurality of liquid crystal electrodes of the adjustable liquid crystal lens layer, wherein the control circuit includes a reset circuit and a detection circuit , and any one of the frame detection circuits includes: a detection capacitor coupled to the reset circuit, wherein the reset circuit provides a reset voltage to the detection capacitor during a reset period, and during the After the reset period, the connection between the reset circuit and the detection capacitor is cut off; and a photosensitive transistor has a first terminal coupled to the detection capacitor, wherein a second terminal of the photosensitive transistor is coupled to the detection circuit, and a control terminal of the photosensitive transistor is coupled to a scan line. The frame hidden panel of claim 1, wherein the control circuit defines an image extension area in the adjustable liquid crystal lens layer based on the position of the frame, and the image extension area overlaps at least a part of the frame, and The control circuit controls the liquid crystal electrodes in the image extension area of the adjustable liquid crystal lens layer to extend an edge image displayed on the display panel in the image extension area. The frame hidden panel as claimed in claim 1, wherein the control circuit reduces an edge area of an original image to generate a reduced image to be displayed on the display panel, and when the display panel displays the reduced image, the control circuit The control circuit controls the liquid crystal electrodes in an image extension area of the adjustable liquid crystal lens layer to extend an edge image of the reduced image displayed on the display panel in the image extension area. The frame hidden panel as claimed in claim 1, wherein the control circuit adds an additional image corresponding to the frame of the display panel to an edge of an original image to generate an added image to be displayed on the display panel, and When the display panel displays the added image, the control circuit controls the liquid crystal electrodes in an image extension area of the adjustable liquid crystal lens layer to extend the additional image of the added image displayed on the display panel. The image extension area. The frame hidden panel as claimed in claim 1, further comprising: an eye tracker coupled to the control circuit for detecting the height and direction of an eye, wherein the control circuit further determines the height and direction of the eye based on the height and direction of the eye. Control the lens characteristics of the adjustable liquid crystal lens layer. The frame hidden panel according to claim 1, wherein the adjustable liquid crystal lens layer includes at least one upper liquid crystal electrode and a plurality of lower liquid crystal electrodes, and the control circuit is based on An image extension area is defined in the adjustable liquid crystal lens layer at this position of the frame. Based on the control of the control circuit, the voltage difference between the at least one upper liquid crystal electrode and the lower liquid crystal electrodes outside the image extension area is There is a low voltage difference that is not enough to affect the liquid crystal, and based on the control of the control circuit, the voltage difference between the at least one upper liquid crystal electrode and the lower liquid crystal electrodes in the image extension area presents an increasing distribution. The frame hidden panel as claimed in claim 1, wherein the adjustable liquid crystal lens layer includes a plurality of upper liquid crystal electrodes and a plurality of lower liquid crystal electrodes, and any of the upper liquid crystal electrodes in a vertical projection of the adjustable liquid crystal lens layer One is located between two of the lower liquid crystal electrodes. The control circuit defines an image extension area in the adjustable liquid crystal lens layer based on the position of the frame. Based on the control of the control circuit, the image extension area is outside the image extension area. The voltage difference between the upper liquid crystal electrodes and the lower liquid crystal electrodes is a low voltage difference that is not enough to affect the liquid crystal, and based on the control of the control circuit, the voltage difference between the upper liquid crystal electrodes and the lower liquid crystal electrodes in the image extension area The voltage difference between them is a high voltage difference that is enough to affect the liquid crystal. The frame hidden panel according to claim 1, wherein the adjustable liquid crystal lens layer includes at least one first lower liquid crystal electrode and a plurality of second lower liquid crystal electrodes, and the second lower liquid crystal electrodes are arranged on the adjustable liquid crystal lens. Between the liquid crystal of the layer and the at least one first lower liquid crystal electrode, the control circuit defines an image extension area in the adjustable liquid crystal lens layer based on the position of the frame, and based on the control of the control circuit, outside the image extension area The voltage difference between the at least one first lower liquid crystal electrode and the second lower liquid crystal electrodes is a low voltage difference that is not enough to affect the liquid crystal, and based on the control voltage The voltage difference between the at least one first lower liquid crystal electrode and the second lower liquid crystal electrodes in the image extension area is a high voltage difference sufficient to affect the liquid crystal. The frame hidden panel according to claim 1, wherein the adjustable liquid crystal lens layer includes at least one first upper liquid crystal electrode, a plurality of second upper liquid crystal electrodes and a plurality of lower liquid crystal electrodes, and the second upper liquid crystal electrodes are configured Between the liquid crystal of the adjustable liquid crystal lens layer and the at least one first upper liquid crystal electrode, the liquid crystal of the adjustable liquid crystal lens layer is arranged between the second upper liquid crystal electrodes and the lower liquid crystal electrodes, and the control The circuit defines an image extension area in the adjustable liquid crystal lens layer based on the position of the frame, and based on the control of the control circuit, between the at least one first upper liquid crystal electrode and the second upper liquid crystal electrodes outside the image extension area The voltage difference between them is a low voltage difference that is not enough to affect the liquid crystal. Based on the control of the control circuit, the voltage difference between the second upper liquid crystal electrodes and the lower liquid crystal electrodes outside the image extension area is a low voltage difference. Based on The control circuit controls the voltage difference between the at least one first upper liquid crystal electrode and the second upper liquid crystal electrodes in the image extension area to be a high voltage difference sufficient to affect the liquid crystal, and based on the control of the control circuit, the voltage difference between the at least one first upper liquid crystal electrode and the second upper liquid crystal electrodes is sufficient to affect the liquid crystal. The voltage difference between the second upper liquid crystal electrodes and the lower liquid crystal electrodes in the image extension area has an increasing distribution. A frame-hiding display device includes: a display panel; and a frame-hiding plate configured on the display panel to visually refine or hide a frame of the display panel, wherein the frame-hiding plate includes: a frame control panel and a detection layer, including a plurality of frame detection circuits for detecting the frame of the display panel; An adjustable liquid crystal lens layer is disposed on the display panel; and a control circuit is coupled to the frame detection circuits and the adjustable liquid crystal lens layer, wherein the control circuit learns the frame through the frame detection circuits a position, the control circuit controls a lens characteristic of the adjustable liquid crystal lens layer according to the position of the frame to visually refine or hide the frame of the display panel, the control circuit includes a data drive circuit, The frame control and detection layer also includes a plurality of control switches. A first end of any one of the control switches is coupled to the data driving circuit through a data line, and a second end of any one of the control switches. The terminal is coupled to a corresponding liquid crystal electrode among the plurality of liquid crystal electrodes of the adjustable liquid crystal lens layer, wherein the control circuit includes a reset circuit and a detection circuit, and any one of the frame detection circuits includes: a a detection capacitor coupled to the reset circuit, wherein the reset circuit provides a reset voltage to the detection capacitor during a reset period, and after the reset period ends, the reset circuit and the detection capacitor The connection between is cut off; and a photosensitive transistor having a first terminal coupled to the detection capacitor, wherein a second terminal of the photosensitive transistor is coupled to the detection circuit, and a A control terminal is coupled to a scan line.

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