TWI501219B - Transparent display device and driving method thereof - Google Patents

Description

Transparent display device and driving method thereof

The present invention relates to the field of display technology, and more particularly to a transparent display device and a driving method thereof.

With the development of technology, transparent display devices are gradually applied to product display cabinets, so that the display panel of the transparent display device can display the screen of the product content, thereby enabling the consumer to clearly understand the relevant information of the product.

However, in the case where the light source of the merchandise display case using the transparent display device is derived from the light source of the light showcase of the merchandise display case, such a transparent display device cannot clearly present the details of the merchandise screen.

The present invention proposes a transparent display device that can perform partition illumination and partition display operations, thereby solving the problem that the details of the product screen cannot be clearly presented.

The present invention further provides a driving method of a transparent display device, which can perform partition light-emitting and partition display operations, thereby solving the problem that the detailed portion of the product image cannot be clearly presented.

The transparent display device provided by the invention comprises a display panel, a backlight module and a control circuit. The display panel has a plurality of display areas, each The display areas are used to display images. The backlight module has a plurality of light-emitting areas, each of which corresponds to one of the display areas, and each of the light-emitting areas has at least one illumination device disposed on at least one side of each display area. The control circuit is electrically connected to the display panel and the backlight module for receiving the display material of the multi-frame picture and driving the display content of the display area display screen in the display panel, and the control circuit is further configured to be used according to the display area Which one wants to display the display content of the screen, and the illumination device that controls the illumination area in the corresponding backlight module emits light.

The driving method of the transparent display device further includes the following steps: providing a transparent display device, comprising: a display panel and a backlight module, the display panel having a plurality of display areas, each of the display areas being respectively used for displaying The image, the backlight module has a plurality of light-emitting areas, each of the light-emitting areas respectively corresponding to one of the display areas, each of the light-emitting areas having at least one illumination device, and the illumination devices are disposed on either side of each display area; Receiving display material of the multi-frame picture, and driving display content of the display area display screen in the display panel; and controlling which one of the display areas is to display the display content of the screen, and controlling the corresponding backlight module The illumination device of the illumination area emits light.

The present invention solves the aforementioned problems by applying a driving method of the above transparent display device to a transparent display device. When the transparent display device receives the display material of the multi-frame image and drives the display content of the display area display screen in the display panel, and according to which one of the display areas is to display the display content of the screen, the corresponding backlight is controlled. The illumination device of the illumination area in the module emits light. Therefore, the transparent display device of the present invention can perform the operation of the partition illumination and the partition display, thereby solving the problem that the detailed portion of the product screen cannot be clearly presented.

100‧‧‧Transparent display device

110‧‧‧ display panel

120‧‧‧Backlight module

130‧‧‧Control circuit

D1, D2, D3, D4‧‧‧ display area

L1, L2, L3, L4‧‧‧ light-emitting areas

121‧‧‧Lighting device

200‧‧‧Commodity display cabinet

301‧‧‧Image computing unit

302‧‧‧Sequence Control Unit

303‧‧‧Display drive unit

310‧‧‧Power supply unit

320‧‧‧Computer host

401‧‧‧Multimedia transmission interface

402‧‧‧Minimized transmission differential signal unit

403‧‧‧Audio/Video Separation Unit

404‧‧‧Digital Analog Conversion Unit

405‧‧‧Image Processing Unit

406‧‧‧ analog digital conversion unit

407‧‧‧Low voltage differential signal unit

408‧‧‧Video Enhancement Unit

409‧‧‧Visual Control Unit

410‧‧‧Dynamic backlight control unit

SO1, SO2‧‧‧ sound analog signal

Display information of RGB‧‧‧ screen

LVDS‧‧‧ low voltage differential signal

DS‧‧‧Zone illuminating signal

S501, S503, S505, S507‧‧‧ steps

1 is a schematic diagram of a transparent display device in accordance with an embodiment of the present invention.

2 is a schematic view of a merchandise display cabinet.

3 is a circuit diagram of a control circuit.

FIG. 4 is a schematic circuit diagram of a video operation unit.

FIG. 5 is a flow chart of a driving method of a transparent display device according to an embodiment of the invention.

1 is a schematic diagram of a transparent display device in accordance with an embodiment of the present invention. Referring to FIG. 1 , the transparent display device 100 includes a display panel 110 , a backlight module 120 , and a control circuit 130 . The display panel 110 has a plurality of display areas, as indicated by reference numerals D1, D2, D3, and D4, and the display areas D1 to D4 are used to display images, respectively. The backlight module 120 has a plurality of illumination regions 121, as indicated by reference numerals L1, L2, L3, and L4. The illumination regions L1 to L4 respectively correspond to the display regions D1 to D4, and each of the illumination regions L1 to L4 has at least one illumination device 121. The illumination device 121 is disposed on at least one side of the display regions D1 to D4. The control circuit 130 is electrically connected to the display panel 110 and the backlight module 120 for receiving the display data of the multi-frame image, and driving the display content of the display area of the display area D1~D4 in the display panel 110 according to the received display data. The control circuit 130 is further configured to control the illumination device 121 of the corresponding light-emitting regions L1 to L4 of the corresponding backlight module 120 to emit light according to which one of the display regions D1 to D4 is to display the display content of the screen. In this embodiment, the above transparent display device 100 can be applied to, for example, a merchandise display case, as illustrated in FIG.

Please refer to FIG. 2 , which is a schematic diagram of a merchandise display cabinet. The transparent display device 100 shown in FIG. 1 is disposed in a product display cabinet 200. The transparent display device 100 can display a screen of product content through the display panel 110, so that the consumer can clearly understand the related information of the product. In detail, the control circuit 130 shown in FIG. 1 is further configured to determine whether the display content of the display screen has a white screen. When the display content of the determination screen is a white screen, the control circuit 130 stops driving the display panel 110 and controls All of the illumination devices 121 of the light-emitting areas L1 to L4 in the backlight module 120 do not emit light, so that the display panel 110 is in a transparent state, thereby enabling the consumer to clearly see the products in the product display cabinet 200. In this embodiment, the display panel 110 can be implemented by using a transparent organic electroluminescent display panel.

In some embodiments, when the control circuit 130 determines that the display content of the screen falls on the display area D1, the control circuit 130 drives the display content of the display area of the display area D1 in the display panel 110, and controls the backlight module 120. All of the illumination devices 121 of the light-emitting area L1 emit light, and all of the illumination devices 121 that control the three light-emitting areas L2, L3, and L4 of the backlight module 120 do not emit light. When the control circuit 130 determines that the display content of the screen falls on the display area D2, the control circuit 130 drives the display content of the display area of the display area D2 in the display panel 110, and controls all the illumination of the light-emitting area L2 in the backlight module 120. The device 121 emits light, and all of the illumination devices 121 that control the three illumination regions L1, L3, and L4 of the backlight module 120 do not emit light. When the control circuit 130 determines that the display content of the screen falls on the display area D3, the control circuit 130 drives the display content of the display area of the display area D3 in the display panel 110, and controls all the illumination of the light-emitting area L3 in the backlight module 120. The device 121 emits light, and all of the illumination devices 121 that control the three illumination regions L1, L2, and L4 of the backlight module 120 do not emit light. When the control circuit 130 determines the picture When the display content falls on the display area D4, the control circuit 130 drives the display content of the display area D4 of the display panel 110 to display the display content of the screen, and controls all the illumination devices 121 of the light-emitting area L4 in the backlight module 120 to emit light, and controls the backlight. All of the illumination devices 121 of the three illumination areas L1, L2 and L3 of the module 120 do not emit light.

In addition, in some embodiments, when the control circuit 130 determines that the display content of the screen falls on the display area D1 and the display area D2 at the same time, the control circuit 130 drives the display of the display areas of the two display areas D1 and D2 in the display panel 110. All the illumination devices 121 of the two illumination regions L1 and L2 of the backlight module 120 are controlled to emit light, and all the illumination devices 121 controlling the two illumination regions L3 and L4 of the backlight module 120 are not illuminated. When the display content of the determination screen falls on the display area D3 and the display area D4, the control circuit 130 drives the display contents of the two display areas D3 and D4 of the display panel 110, and controls the backlight module 120. All of the illumination devices 121 of the two illumination regions L3 and L4 emit light, and all of the illumination devices 121 that control the two illumination regions L1 and L2 of the backlight module 120 do not emit light.

When the control circuit 130 determines that the display content of the screen falls on the display area D1, the display area D2, and the display area D3, the control circuit 130 drives the display contents of the three display areas D1, D2, and D3 of the display panel 110, All the illumination devices 121 of the three illumination regions L1, L2 and L3 in the backlight module 120 are controlled to emit light, and all the illumination devices 121 controlling the illumination region L4 in the backlight module 120 are not illuminated.

When it is determined that the display content of the screen falls on the display area D2 and the display area D3, the control circuit 130 drives the display contents of the two display areas D2 and D3 of the display panel 110, and controls the second of the backlight modules 120. All of the illumination devices 121 of the light-emitting regions L2 and L3 emit light and control All of the illumination devices 121 of the two illumination regions L1 and L4 of the backlight module 120 do not emit light. When the control circuit 130 determines that the display content of the screen falls in the four display areas D1 D D4, the control circuit 130 drives the display contents of the display screens of the four display areas D1 D D4 in the display panel 110, and controls the backlight module 120. All of the illumination devices 121 of the four illumination areas L are illuminated.

FIG. 3 is a schematic circuit diagram of the above control circuit 130. In FIG. 3, the same reference numerals as those in FIG. 1 are denoted as the same items. The control circuit 130 includes a video operation unit 301, a timing control unit 302, and a display drive unit 303. The image operation unit 301 is configured to receive display data of the screen, generate a low voltage differential signal LVDS and a plurality of partition illumination signals according to the display data of the screen, and transmit the low voltage differential signal LVDS to the timing control unit 302, and the above The zone illumination signals are transmitted to the backlight module 120, and the zone illumination signals control the illumination devices 121 of the illumination areas L1 to L4 shown in FIG. The timing control unit 302 is electrically connected to the image operation unit 301 to receive the low voltage differential signal LVDS, and generates a timing control signal according to the low voltage differential signal LVDS. The display driving unit 303 is electrically connected to the timing control unit 302 to receive the timing control signal, and drives the display areas D1 to D4 in the display panel 110 shown in FIG. 1 to display images according to the timing control signals transmitted to the display driving unit 303. . In fact, the transparent display device 100 of the present invention further includes a power supply unit 310 for supplying power to the control circuit 130 and supplying power to all of the illumination devices 121 in the backlight module 120 shown in FIG. 1. The display data of the above screen is provided by the host computer 320.

FIG. 4 is a schematic circuit diagram of the image computing unit 301. In FIG. 4, the same reference numerals as those in FIG. 3 are denoted as the same items. The image operation unit 301 includes a multimedia transmission interface 401 and minimizes transmission. The differential signal unit 402, the audio/video separation unit 403, the digital analog conversion unit 404, the image processing unit 405, the analog digital conversion unit 406, the low voltage differential signal unit 407, the video enhancement unit 408, the visual adjustment unit 409, and the dynamic backlight control Unit 410. The minimized transmission differential signal unit 402 receives the sound/image signal provided from the host computer 320 shown in FIG. 3 through the multimedia transmission interface 401, and the minimized transmission differential signal unit 402 also generates a minimized transmission differential signal according to the sound/image signal. . In fact, the Minimized Transmission Differential Signal Unit 402 is a high-speed transmission data technology commonly used in High Definition Multimedia Interface (HDMI) or Digital Visual Interface (DVI) to minimize transmission. The differential signal unit 402 utilizes the voltage difference between the two pins to transmit a minimized transmission differential signal. The audio/video separation unit 403 is electrically coupled to the minimized transmission differential signal unit 402 to receive the minimized transmission differential signal and to generate an audio signal and a video signal in accordance with the minimized transmission differential signal. The digital analog conversion unit 404 is electrically connected to the audio/video separation unit 403 to receive the audio signal, and converts the audio signal into a first sound analog signal SO1 and a second sound analog signal SO2. The two sound analog signals SO1 and SO2 It is passed to the left and right channels of the sound amplifier to make a sound through the left and right channels.

The image processing unit 405 is electrically connected to the audio/video separation unit 403 to receive the video signal, and the image processing unit 405 also receives the display data from the screen provided by the host 320 shown in FIG. 3 through the analog digital conversion unit 406. RGB, and generates image processing signals according to the video signal and the display material RGB of the screen. Actually, the image processing unit 405 performs image scaling processing on the video signal and the display material RGB of the screen to generate an image processing signal. In this embodiment, such image scaling processing technique The technique can be performed by Nearest-neighbor interpolation, Bilinear interpolation, Bicubic interpolation, Pixel art scaling algorithms or Supersampling. achieve. The low voltage differential signal unit 407 is electrically connected to the video enhancement unit 408 to receive the video enhancement signal generated by the video enhancement unit 408, and the video enhancement unit 408 is electrically connected to the image processing unit 405 to receive the image processing signal to generate the video enhancement described above. The signal, low voltage differential signal unit 407 generates a low voltage differential signal LVDS in accordance with the video enhancement signal. The low voltage differential signal LVDS is a signal generated by the image operation unit 301 shown in FIG. 3, so that the timing control unit 302 shown in FIG. 3 generates a timing control signal according to the low voltage differential signal LVDS, thereby causing the display driving unit 303. The display control signal is generated by receiving the timing control signal, and which of the display areas D1 to D4 in the display panel 110 is to be driven by the display drive signal to display the display content of the screen. The video enhancement unit 408 is electrically connected to the image processing unit 405 to receive the image processing signal, and generates a video enhancement signal according to the image processing signal, and transmits the video enhancement signal to the low voltage differential signal unit 407. The visual adjustment unit 409 adjusts the brightness, contrast, color, shift or display range of the transparent display device 100 according to the setting menu displayed by the display panel 110, and transmits the signal to the video. Enhancement unit 408. The video enhancement unit 408 processes the image processing signal generated by the image processing unit 405 and the visual control adjustment signal generated by the visual adjustment unit 409 to generate a video enhancement signal, and transmits the signal to the low voltage differential signal unit 407. And a dynamic backlight control unit 410. The dynamic backlight control unit 410 generates a plurality of divided light-emitting signals DS according to the video enhancement signal, and the divided light-emitting signals DS control the illumination devices 121 of the light-emitting regions L1 to L4 shown in FIG.

Through the description of the above embodiments, some basic operational steps of the transparent display device of the present invention can be summarized, as shown in FIG. FIG. 5 is a flow chart of a driving method of a transparent display device according to an embodiment of the invention. The transparent display device comprises a display panel and a backlight module. The display panel has a plurality of display areas, each of which is used for displaying images. The backlight module has a plurality of light-emitting areas, and each of the light-emitting areas respectively corresponds to the display area. In one of the embodiments, each of the illuminating regions has at least one illuminating device disposed on at least one side of each of the display regions. Referring to FIG. 5, the driving method includes the steps of: receiving the display material of the multi-frame picture, and driving the display content of the display area display screen in the display panel (step S501). Next, the image computing unit determines whether the display content of the screen is a white screen (step S503). When the display content of the screen is a white screen, the illumination device that controls all the light-emitting areas in the backlight module does not emit light, so that the display panel assumes a transparent state (step S505). When the display content of the screen has no white screen, the illumination device that controls the illumination area in the corresponding backlight module is illuminated according to which one of the display areas is to display the display content of the screen (step S507).

As described above, the present invention solves the aforementioned problems by applying the driving method of the above transparent display device to a transparent display device. When the transparent display device receives the display material of the multi-frame image and drives the display content of the display area display screen in the display panel, and according to which one of the display areas is to display the display content of the screen, the corresponding backlight is controlled. The illumination device of the illumination area in the module emits light. Therefore, the transparent display device of the present invention can perform the operation of the partition illumination and the partition display, thereby solving the problem that the detailed portion of the product screen cannot be clearly presented.

100‧‧‧Transparent display device

110‧‧‧ display panel

120‧‧‧Backlight module

130‧‧‧Control circuit

D1, D2, D3, D4‧‧‧ display area

L1, L2, L3, L4‧‧‧ light-emitting areas

121‧‧‧Lighting device

Claims (14)

A transparent display device includes: a display panel having a plurality of display areas, each of the display areas for displaying an image; a backlight module having a plurality of light-emitting areas, each of the light-emitting areas respectively corresponding to the display area For example, each of the light emitting regions has at least one illumination device disposed on at least one side of each of the display regions; and a control circuit electrically connected to the display panel and the backlight module a group for receiving display data of a multi-frame image, and driving the display areas in the display panel to display display contents of the screens, wherein the control circuit is configured to display the images according to which ones of the display areas The display content of the screen is controlled by the illumination device controlling the corresponding illumination regions in the backlight module. The transparent display device of claim 1, wherein when the display content of the screens is a white screen, the control circuit is configured to control the illumination devices of all the illumination regions in the backlight module to not emit light, The display panel is rendered in a transparent state. The transparent display device of claim 1, wherein the display panel is an organic electroluminescent display panel, and when the display content of the screens is a white screen, the control circuit stops driving the organic The light display panel is excited to make the organic electroluminescent display panel appear transparent. The transparent display device of claim 1, wherein the display panel is a transparent organic electroluminescent display panel. The transparent display device of claim 1, wherein the control circuit comprises: an image computing unit, configured to receive display data of the screens, and generate an image display signal according to the display materials of the screens; And a plurality of partitioned illuminating signals, wherein the illuminating signals are transmitted to the backlight module for controlling illumination of the illuminating devices; and a timing control unit is electrically connected to the image computing unit to receive the image Displaying a signal, and generating a timing control signal according to the image display signal; and a display driving unit electrically connected to the timing control unit to receive the timing control signal, and driving the display panel according to the timing control signal The display areas respectively display images. The transparent display device of claim 1, further comprising a power supply unit for supplying a power source to the control circuit and the backlight module. The transparent display device of claim 1, wherein the display data of the screens is provided by a computer host. A driving method for a transparent display device, comprising: providing a transparent display device, comprising: a display panel and a backlight module, wherein the display panel has a plurality of display areas, each of the display areas for displaying images, The backlight module has a plurality of light emitting regions, each of the light emitting regions respectively corresponding to one of the display regions, each of the light emitting regions having At least one illuminating device disposed on at least one side of each of the display areas; receiving display materials of the multi-frame image, and driving the display areas in the display panel to display display contents of the screens And controlling, according to which one of the display areas, the display content of the screens is controlled, and controlling the lighting device of the corresponding light-emitting areas in the backlight module to emit light. The driving method of claim 8, wherein when the display content of the screens is a white screen, the lighting device that controls all the light-emitting areas in the backlight module does not emit light, so that the display panel is presented. Transparent state. The driving method of claim 8, wherein the display panel is an organic electroluminescent display panel, and when the display content of the screens is a white screen, stopping driving the organic electroluminescent display panel The organic electroluminescent display panel is rendered in a transparent state. The driving method of claim 8, wherein the display panel is a transparent organic electroluminescent display panel. The driving method of claim 8, further comprising: using an image computing unit to receive display data of the screens, and generating an image display signal and a plurality of partitioned illumination signals according to the display materials of the screens; The partition illumination signals are transmitted to the backlight module for controlling illumination of the illumination devices of the illumination regions; and a timing control unit is used to receive the image display signals, and according to the The image display signal generates a timing control signal; and a display driving unit is used to receive the timing control signal, and the display areas in the display panel are respectively driven to display images according to the timing control signal. The driving method of claim 8, wherein the transparent display device further comprises a power supply unit for supplying a power source to the control circuit and the backlight module. The driving method of claim 8, wherein the display data of the screens is provided by a computer host.