WO2012090958A1 - Display device, liquid crystal display device, and television receiver device - Google Patents

Abstract

This display device displays a second image in a sub-region while displaying, in a main region, a first image having a resolution (total number of pixels) higher than or equal to the resolution of high-definition television broadcasting (HDTV) without reducing the resolution thereof to a resolution lower than that of HDTV. Thus, it is possible to enhance usability for users.

Description

Display device, liquid crystal display device, television receiver

The present invention relates to a display device that simultaneously displays a plurality of videos.

A high-definition television broadcast (HDTV, resolution is 1920 × 1080, aspect ratio is 16: 9) and a program on a display unit with an aspect ratio (horizontal size in viewing state: vertical size) of 16: 9 When displaying sub-pictures such as a table at the same time, the second video is displayed in an empty area generated by resizing the main video (reducing the whole while maintaining the aspect ratio) or cutting the edge of the main video (changing the aspect ratio). Is displayed, or a sub video is overlaid on the peripheral edge of the main video.

In Patent Document 1, in the instrument panel that simultaneously displays the navigation video and the speedometer video, when the navigation video needs to be enlarged, only the horizontal size is enlarged without changing the vertical size of the navigation video. However, a technique for displaying the speedometer video by changing the horizontal size to a smaller form is disclosed.

Japanese Patent Gazette "Patent No. 4302964"

The conventional technology has a problem in that when the main video and the sub video are displayed simultaneously, viewing of the main video is hindered by resizing, cutting, or overlapping display of the sub video. In addition, there is a problem that a load is applied to the display device due to resizing or cutting of the main video or superimposition of the sub video.

An object of the present invention is to propose a display device with improved user convenience.

The display device includes a main area and a sub area in a display unit, and displays a first video having a resolution (total number of pixels) equal to or higher than a resolution (total number of pixels) of HDTV (high definition television broadcasting). The second video is displayed in the sub area while being displayed in the main area without being reduced below the resolution.

The above configuration has an advantage that viewing of the first video is not hindered by the display of the second video. In addition, since the resizing process of the first video and the overlaying process of the second video are unnecessary, there is an advantage that the load on the television receiver can be reduced.

According to the present invention, a display device with improved user convenience can be realized.

FIG. 3 is a schematic diagram illustrating a display unit of the television receiver according to the first embodiment. 1 is a block diagram illustrating a configuration example of a television receiver according to Embodiment 1. FIG. FIG. 3 is a schematic diagram illustrating a configuration example of a part (around the liquid crystal panel) of FIG. 2. It is a schematic diagram which shows the pixel structural example of the liquid crystal panel of FIG. FIG. 3 is a schematic diagram illustrating a configuration example of a part of FIG. 2 (around a liquid crystal panel driving circuit and a backlight system). FIG. 6 is a schematic diagram showing another form (display unit) of Example 1. FIG. 6 is a schematic diagram showing still another form (display unit) of Example 1. It is a schematic diagram which shows the structural example around the liquid crystal panel of the television receiver which implement | achieves the display part of FIG. It is a schematic diagram which shows another structural example around the liquid crystal panel of the television receiver which implement | achieves the display part of FIG. 10 is a schematic diagram illustrating a display unit of a television receiver according to Embodiment 2. FIG. FIG. 11 is a schematic diagram illustrating a configuration example around a liquid crystal panel of a television receiver that realizes the display unit of FIG. 10. It is a schematic diagram which shows another structural example around the liquid crystal panel of the television receiver which implement | achieves the display part of FIG. FIG. 6 is a schematic diagram illustrating a display unit of a television receiver according to a third embodiment. It is a schematic diagram which shows the structural example around the liquid crystal panel of the television receiver which implement | achieves the display part of FIG. FIG. 10 is a schematic diagram showing another form (display unit) of Example 3. FIG. 10 is a schematic diagram illustrating a display unit of a television receiver according to a fourth embodiment. FIG. 17 is a schematic diagram illustrating a configuration example around a liquid crystal panel of a television receiver that realizes the display unit of FIG. 16. FIG. 10 is a schematic diagram illustrating a configuration example around a liquid crystal panel drive circuit and a backlight system in Example 4. FIG. 10 is a schematic diagram illustrating a display example of a cinema size video on the display unit according to the fourth embodiment. FIG. 17 is a schematic diagram illustrating a configuration example around a liquid crystal panel of a television receiver that realizes the display unit of FIG. 16. FIG. 17 is a schematic diagram illustrating another configuration example around the liquid crystal panel of the television receiver that realizes the display unit of FIG. 16. FIG. 17 is a schematic diagram illustrating still another configuration example around the liquid crystal panel of the television receiver that realizes the display unit of FIG. 16. FIG. 10 is a schematic diagram illustrating a configuration around a liquid crystal panel of a television receiver according to Embodiment 5; It is a schematic diagram which shows the further another structural example of this television receiver. It is a schematic diagram which shows the further another structural example of this television receiver.

Embodiments of the present invention will be described with reference to FIGS. 1 to 25 as follows. In the following description, the aspect ratio indicates horizontal size: vertical size, and the resolution indicates horizontal effective total number of pixels × vertical effective total number of pixels.

[Example 1]
FIG. 1 is a schematic diagram illustrating a display unit of a television receiver (for example, a mobile liquid crystal display mounted on a liquid crystal television or a mobile phone) according to the first embodiment. As shown in FIG. 1, this television receiver has a main area MAR and a sub-area SAR in the display unit, and has a resolution higher than that of a high-definition television (High Definition TV, hereinafter abbreviated as HDTV) broadcast. The second video is displayed in the sub-area SAR while the first video having the resolution is displayed in the main area MAR without being lowered below the resolution of the HDTV broadcast.

The display part is a horizontally long rectangle. The main area MAR is also a horizontally long rectangle, the resolution is 1920 × 1080 or more, and the aspect ratio is 16: 9. The sub-area SAR is a vertically long rectangle having a long side equal to the short side of the main area MAR, a second area A2 having a horizontally long rectangle, and a horizontally long rectangle having a short side short of the second area A2. And the sum of the long side of the main area MAR and the short side of the first area A1 is equal to the sum of the long side of the second area A2 and the long side of the third area A3. It has become.

The first area A1 is arranged so as to be in contact with one short side of the main area MAR, the second area A2 is arranged so as to be in contact with one long side of the main area MAR, and the third area A3 is The one long side of the main area MAR, the one short side of the first area A1, and the one short side of the second area A2 are arranged in contact with each other.

The first video may be an HDTV broadcast video or a video having a higher resolution than the HDTV broadcast, and the supply source is not limited. For example, a tuner, a recording medium such as a hard disk / Blu-ray, a mobile communication device, a game machine, a video camera, and an external network (Internet, LAN, TV phone line, etc.).

Here, the HDTV broadcast video (aspect ratio is 16: 9) is displayed in the main area MAR while maintaining its resolution (total number of pixels, for example, 1920 × 1080). For high-resolution video having a higher resolution than HDTV broadcasting, display the video in the main area MAR while maintaining the resolution (in this case, the main area MAR requires a resolution corresponding to the high-resolution video) or set the resolution to HDTV. The resolution is reduced to the resolution of the image (by reducing the total number of pixels by reducing the size or cutting).

The second video is a video including one or more (preferably plural) content videos. Content video includes, for example, user interface video, tool video (clock, thermometer, calendar, etc.), still video such as photos, TV broadcast video (via tuner), video supplied from a recording medium (hard disk, Blu-ray, etc.) These are images supplied from other devices (mobile communication devices, game machines, video cameras, etc.) and images supplied from a network (Internet, LAN, TV phone line, etc.), and the resolution and aspect ratio are not limited.

The present television receiver displays the second video in the sub area SAR while displaying the first video in the main area MAR without reducing the first video below the resolution of the HDTV broadcast. It goes without saying that a video other than one video (video having a lower resolution than HDTV broadcasting) may be displayed, or the first video may be displayed in the main area MAR while nothing is displayed in the sub-area SAR. Nor.

In the display unit of FIG. 1, while displaying the HDTV video in the main area MAR without reducing the resolution, the WEB video (for example, Twitter video) is displayed in the first area A1, the user interface video is displayed in the second area A2, A TV phone image (via a TV phone line) is displayed in the three area A3. The user interface video is a video (including a plurality of icons) for accepting user input. For example, when the user selects a tweeter icon, the tweeter video is displayed in the first area A1, and the user can By selecting an icon, a videophone video is displayed in the third area A3. The Twitter operation is performed in the first area A1, and the videophone operation is performed in the third area A3. The user input accompanying these operations may be input by a remote control device (for example, in the case of a large TV), or input by a touch (proximity) sensor provided in the first area A1 or the third area A3. It may be present (for example, in the case of a small TV for mobile use) or may be a gesture input by a camera or an infrared sensor.

Also, the aspect ratio of the third area A3 can be set to 16: 9 as in the main area MAR. This is convenient for displaying HDTV broadcast video and HDTV standard video in the sub-area SAR.

In this television receiver, in order to display the second video in the sub-area SAR while displaying the first video having a resolution equal to or higher than the resolution of the HDTV broadcast in the main area MAR without lowering the resolution below the resolution of the HDTV broadcast. There is an advantage that viewing of the first video is not hindered by the display of the second video. In addition, since the resizing process of the first video and the overlaying process of the second video are unnecessary, there is an advantage that the load on the television receiver can be reduced.

FIG. 2 is a schematic diagram showing a configuration of the present television receiver 100, FIG. 3 is a schematic diagram showing a configuration example of a part of FIG. 2 (around the liquid crystal panel), and FIG. 4 is a schematic diagram of FIG. FIG. 5 is a schematic diagram illustrating a pixel structure of a main area and a sub-area of the liquid crystal panel, and FIG. 5 is a schematic diagram illustrating a configuration example of a part of FIG. 2 (around the liquid crystal panel drive circuit and the backlight system).

As shown in FIG. 2, the television receiver 100 includes a liquid crystal panel (LCP) constituting a display unit, a liquid crystal panel drive circuit, a display control circuit, a user input processing unit, a main area control unit, A sub-area processing unit, a backlight system, a backlight control unit, a communication interface, a tuner, and a power supply system are provided.

In the liquid crystal panel LCP, as shown in FIGS. 1 and 3, each of the four areas of the main area MAR, the first area A1, the second area A2, and the third area A3 is driven independently (each of the four areas). Are independently provided with scanning signal lines and data signal lines). The main area MAR includes 1080 or more scanning signal lines and 1920 × 3 (R, G, B) or more data signal lines. More specifically, as shown in FIG. 4, one pixel in the main area MAR is composed of four sub-pixels (red, green, blue, and yellow) arranged side by side, and one pixel in the sub-area SAR is arranged side by side 4 It consists of two sub-pixels (red, green, blue, white). The aperture ratio of the sub-pixel is 1: 1: 1: 1, but the ratio can be changed. Further, the pixel configuration of the main area and the sub area may be the same.

The liquid crystal panel driving circuit includes a main gate driver D that drives scanning signal lines in the main area MAR, a main source driver d that drives data signal lines in the main area MAR, and scanning signal lines in the first area A1 in the sub-area SAR. A first sub-gate driver D1 that drives the first sub-source driver d1 that drives the data signal line in the first area A1 of the sub-area SAR, and a second that drives the scanning signal line in the second area A2 of the sub-area SAR. A sub-gate driver D2, a first sub-source driver d2 that drives a data signal line in the second area A2 of the sub-area SAR, a third sub-gate driver D3 that drives a scanning signal line in the third area A3 of the sub-area SAR, A third sub-source driver d3 for driving a data signal line in the third area A3 of the sub-area SAR; Provided.

Referring back to FIG. 2, the user input processing unit processes the user input and outputs the processing result to the main area control unit and the sub area control unit. When a touch (proximity) sensor is provided in the sub-area SAR of the liquid crystal panel LCP, the touch (proximity) sensor is connected to the user input processing unit. The main area control unit outputs video data for the main area corresponding to the processing result of the user input processing unit to the display control circuit and the backlight control circuit. The sub-area control unit outputs video data for the sub-area according to the processing result of the user input processing unit to the display control circuit and the backlight control circuit.

The display control circuit receives the video data for the main area and the video data for the sub area, and controls the liquid crystal panel drive circuit. The backlight control circuit receives the video data for the main area and the video data for the sub area and controls the backlight system.

For example, when the user inputs that the HDTV video being broadcast is displayed in the main area MAR, the main area control unit that has received the processing result from the user input processing unit sends the corresponding HDTV video via the tuner. The data is fetched and output to the display control circuit and the backlight control circuit. When the user inputs to display the HDTV video recorded on the recording medium (for example, hard disk) in the main area MAR, the main area control unit that receives the processing result from the user input processing unit performs communication. The HDTV video data recorded on the recording medium is taken in via the interface and output to the display control circuit and the backlight control circuit. Further, when the user inputs to display the HDTV video on the network in the main area MAR, the main area control unit that has received the processing result from the user input processing unit transmits the result on the network via the communication interface. HDTV video data is taken in and output to the display control circuit and the backlight control circuit. When the user inputs to display the HDTV video of the video camera in the main area MAR, the main area control unit that receives the processing result from the user input processing unit transmits the video camera via the communication interface. HDTV video data is taken in and output to the display control circuit and the backlight control circuit.

Further, when the user inputs to display the Twitter video in the first area A1 of the sub-area SAR, the sub-area control unit that receives the processing result from the user input processing unit transmits the network via the communication interface. The video data of the upper Twitter is taken in and output to the display control circuit and the backlight control circuit. In addition, when the user inputs to display the videophone video in the third area A3 of the sub-area SAR, the sub-area control unit that receives the processing result from the user input processing unit passes through the communication interface. The video data of the video phone is taken in from the video phone line and is output to the display control circuit and the backlight control circuit. Further, when the user inputs that the HDTV video being broadcast is displayed in the third area A3 of the sub-area SAR, the sub-area control unit that receives the processing result from the user input processing unit passes through the tuner. The corresponding HDTV video data is captured and output to the display control circuit and the backlight control circuit.

The backlight control circuit controls the backlight system as shown in FIG. The backlight system includes a part MBL corresponding to the main area MAR, a part SBL1 corresponding to the first area A1, a part SBL2 corresponding to the second area A2, and a part SBL3 corresponding to the third area A3. The four parts are driven independently. More specifically, LED circuits (plural) including LEDs of a plurality of colors are arranged in a matrix in the part MBL corresponding to the main area MAR, and the brightness of each LED circuit is individually controlled according to video data. (2D luminance control). Further, in the portion SBL1 corresponding to the first area A1, LED circuits (plural) including LEDs of a plurality of colors are arranged in one row (vertical) or in a matrix form, and the brightness of all the LED circuits is uniformly controlled (0D Mold brightness control). In the portion SBL2 corresponding to the second area A2, LED circuits (plural) including LEDs of a plurality of colors are arranged in one row (horizontal) or in a matrix, and the brightness of all the LED circuits is uniformly controlled (0D Mold brightness control). Further, in the portion SBL3 corresponding to the third area A3, LED circuits (plural) including LEDs of a plurality of colors are arranged in a matrix, with the LED circuits arranged in the row direction as a unit, and brightness in units of rows according to video data Controlled (1D type luminance control).

In addition, the backlight control circuit receives four processing results from the user input processing unit, and controls the four parts of the backlight system (MBL, SBL1-3) in response to control signals from the main area control unit and the sub area control unit. ) Are turned ON / OFF individually. That is, the part MBL corresponding to the main area MAR is connected to the power supply circuit via SW0, the part SBL1 corresponding to the first area A1 is connected to the power supply circuit via SW1, and the part SBL2 corresponding to the second area A2 Is connected to the power supply circuit via SW2, and a portion SBL3 corresponding to the third area A3 is connected to the power supply circuit via SW3. For example, when only the main area MAR is turned on, only SW0 is turned on and SW1 to SW3 are turned off. When only the first area A1 (sub-area SAR) is turned on, only SW1 is turned on and SW0 is turned on. And SW2 to SW3 are turned OFF.

Further, for the four driver sets (D · d, D1 · d1, D2 · d2, D3 · d3) included in the liquid crystal panel drive circuit, the main gate driver D and the main source driver d are connected to the power supply circuit via SW0. The first sub-gate driver D1 and the first sub-source driver d1 are connected to the power supply circuit via SW1, the second sub-gate driver D2 and the second sub-source driver d2 are connected to the power supply circuit via SW2, and the third The sub gate driver D3 and the third sub source driver d3 are connected to the power supply circuit via SW3. Therefore, for example, when only the main area MAR is turned ON (only SW0 is ON), only the main gate driver D and the main source driver d are connected to the power supply circuit, and the other drivers are disconnected from the power supply circuit. When only the first area A1 is turned on (only SW1 is turned on), only the first sub-gate driver D1 and the first sub-source driver d1 are connected to the power supply circuit, and other drivers are disconnected from the power supply circuit.

In the present embodiment, as shown in FIG. 6, the resolution of the third area A3 of the sub-area SAR may be 1920 (total pixels in the horizontal direction) × 1080 (total pixels in the vertical direction). In this way, the HDTV can be displayed in the third area A3 without reducing the resolution. Further, as shown in FIG. 7, the second area A2 of the sub-area SAR has the same size as the main area MAR, and the resolution of the second area A2 is 1920 (total pixels in the horizontal direction) × 1080 (total pixels in the vertical direction). ). In this way, the HDTV can be displayed in the second area A2 without reducing the resolution. A configuration example around the liquid crystal panel for realizing the display unit of FIG. 7 is shown in FIG. In FIG. 8, the first area A1 and the third area A3 are individually driven. However, as shown in FIG. 9, these are not individually driven (the data signal lines in the first area A1 and the third area A3). A common configuration may be used.

[Example 2]
FIG. 10 is a schematic diagram illustrating a display unit of the television receiver according to the second embodiment. 2, 4, and 5 can be applied mutatis mutandis except for the display portion of the television receiver. As shown in FIG. 10, the display unit is a horizontally long rectangle. The main area MAR is also a horizontally long rectangle, the resolution is 1920 × 1080 or more, and the aspect ratio is 16: 9. The sub-area SAR is a horizontally long rectangle, a horizontally long rectangular first area A1, a horizontally long rectangular second area A2 whose long side is equal to the long side of the first area A1, and a horizontally long rectangular short side. The third area A3 is equal to the sum of the short side of the first area A1 and the short side of the second area A2, and the long side of the main area MAR is the long side of the first area A1 and the long side of the third area A3. It is equal to the sum with the side.

The first area A1 is arranged to contact one short side of the main area MAR, the second area A2 is arranged to contact one long side of the first area A1, and the third area A3 is The one long side of the main area MAR, the one short side of the first area A1, and the one short side of the second area A2 are arranged in contact with each other.

In the display unit of FIG. 10, while displaying the HDTV video in the main area MAR without reducing the resolution, the WEB video (eg, Twitter video) is displayed in the first area A1, the user interface video is displayed in the second area A2, A TV phone image (via a TV phone line) is displayed in the three area A3.

FIG. 11 is a configuration example around the liquid crystal panel for realizing the display unit of FIG. In FIG. 11, the main gate driver D that drives the scanning signal lines in the main area MAR, the main source driver d that drives the data signal lines in the main area MAR, and the first area A1 and the second area A2 in the subarea SAR. The first sub-gate driver D1 that drives the scanning signal lines, the first sub-source driver d1 that drives the data signal lines in the first area A1 and the second area A2 of the sub-area SAR, and the third area A3 of the sub-area SAR A second sub-gate driver D2 for driving the scanning signal lines and a second sub-source driver d2 for driving the data signal lines in the third area A3 of the sub-area SAR are provided. In FIG. 11, the third area A3 is driven separately from the first and second areas A1 and A2. However, as shown in FIG. 12, the third area A3 is not driven separately (first and second). The scanning signal lines may be shared between the areas A1 and A2 and the third area A3.

Example 3
FIG. 13 is a schematic diagram illustrating a display unit of the television receiver according to the third embodiment. 2, 4, and 5 can be applied mutatis mutandis except for the display portion of the television receiver. As shown in FIG. 13, the display unit is a horizontally long rectangle. The main area MAR is also a horizontally long rectangle, the resolution is 1920 × 1080 or more, and the aspect ratio is 16: 9. The sub-area SAR is a horizontally long rectangle, the horizontally long rectangular first area A1, the horizontally long rectangular second area A2 whose short side is equal to the short side of the first area A1, and the horizontally long rectangular long side. The third area A3 is equal to the long side of the main area MAR, and the long side of the main area MAR is equal to the sum of the long side of the first area A1 and the long side of the third area A3.

The first area A1 is arranged so as to be in contact with one long side of the main area MAR, the second area A2 is arranged so as to be in contact with the one long side of the main area MAR, and the third area A3 is The first area A1 is in contact with one long side of the first area A1 and the one long side of the second area A2.

In the display unit of FIG. 13, while displaying the HDTV video in the main area MAR without reducing the resolution, the TV phone video (via the TV phone line) is displayed in the first area A1, the user interface video is displayed in the second area A2, A WEB video (for example, breaking news) is displayed in the third area A3.

FIG. 14 is a configuration example around the liquid crystal panel for realizing the display unit of FIG. In FIG. 14, the main gate driver D · D ′ that drives the scanning signal line of the main area MAR from both ends, the main source driver d that drives the data signal line of the main area MAR, and the scanning signal line of the sub area SAR are driven. A first sub-gate driver D1 that drives a data signal line in the sub-area SAR.

In this embodiment, as shown in FIG. 15, the sub-area SAR is divided into a first area A1 having a long side equal to the long side of the main area MAR, and a second area A2 having a long side equal to the long side of the main area MAR. The first area A1, the main area MAR, and the second area A2 can be arranged vertically in this order. The main area MAR has a resolution of 1920 × 1080 or more and an aspect ratio of 16: 9, and the second area A2 has a resolution of 1920 × 1080 or more and an aspect ratio of 16: 9. In the display unit of FIG. 15, while displaying the HDTV video in the main area MAR without reducing the resolution, the WEB video (for example, breaking news) is displayed in the first area A1, and the videophone video (HDTV standard) in the second area A2. ) Or HDTV.

Example 4
FIG. 16 is a schematic diagram illustrating a display unit of the television receiver according to the fourth embodiment. Note that FIGS. 2 and 4 can be applied mutatis mutandis except for the display section of the television receiver. As shown in FIG. 16, the display unit is a horizontally long rectangle, and the aspect ratio is 21: 9. The main area MAR is also a horizontally long rectangle, the resolution is 1920 × 1080 or more, and the aspect ratio is 16: 9. The sub-area SAR is a vertically long rectangle, and includes a first area A1 that is a horizontally long rectangle and a second area A2 that is horizontally long and has a long side equal to the long side of the first area A1, and is short of the main area MAR. The side is equal to the sum of the short side of the first area A1 and the short side of the second area A2.

The first area A1 is arranged so as to be in contact with one short side of the main area MAR, and the second area A2 is formed on the one short side of the main area MAR and one long side of the first area A1. It is arranged to touch.

In the display unit of FIG. 16, while displaying the HDTV video in the main area MAR without reducing the resolution, the WEB video (eg, Twitter video) is displayed in the first area A1, and the user interface video is displayed in the second area A2. ing.

FIG. 17 is a configuration example around the liquid crystal panel for realizing the display unit of FIG. In FIG. 17, the first main gate driver D that drives the upper half scanning signal lines of the main area MAR, the first main source driver d that drives the upper half data signal lines of the main area MAR, and the main area MAR A second main gate driver D ′ for driving the lower half scanning signal line, a second main source driver d ′ for driving the lower half data signal line of the main area MAR, and a scanning signal line for the first area A1. The first sub-gate driver D1, the first sub-source driver d1 that drives the data signal lines in the first area A1, the second sub-gate driver D2 that drives the scanning signal lines in the second area A2, and the second area A2. And a second sub-source driver d2 for driving the data signal line. In the display unit of the television receiver, the upper half of the main area MAR and the lower half of the main area MAR are driven separately, and in synchronization with the scanning (data writing) of the upper half of the main area MAR, Lower half scanning (data writing) is performed (source double drive).

In the present television receiver, the backlight control circuit controls the backlight system as shown in FIG. The backlight system includes a part MBL corresponding to the main area MAR, a part SBL1 corresponding to the first area A1, and a part SBL2 corresponding to the second area A2, and the three parts are driven independently. More specifically, LED circuits (plural) including LEDs of a plurality of colors are arranged in a matrix in the part MBL corresponding to the main area MAR, and the brightness of each LED circuit is individually controlled according to video data. (2D luminance control). In the portion SBL1 corresponding to the first area A1, LED circuits (plural) including LEDs of a plurality of colors are arranged in one row (horizontal) or in a matrix, and the luminance of all the LED circuits is uniformly controlled (0D Mold brightness control). Also in the portion SBL2 corresponding to the second area A2, LED circuits (plural) including LEDs of a plurality of colors are arranged in one row (horizontal) or in a matrix form, and the brightness of all the LED circuits is uniformly controlled (0D Mold brightness control).

In addition, the backlight control circuit receives three processing results from the main area control unit and the sub area control unit, and receives three processing results from the user input processing unit (MBL, SBL1-2). ) Are turned ON / OFF individually. That is, the part MBL corresponding to the main area MAR is connected to the power supply circuit via SW0, the part SBL1 corresponding to the first area A1 is connected to the power supply circuit via SW1, and the part SBL2 corresponding to the second area A2 Is connected to the power supply circuit via SW2. For example, when only the main area MAR is turned ON, only SW0 is turned ON and SW1 to SW2 are turned OFF. When only the first area A1 (sub-area SAR) is turned ON, only SW1 is turned ON and SW0 is turned ON. And SW2 is turned off.

Further, for the four driver sets (D · d, D ′ · d ′, D1 · d1, D2 · d2) included in the liquid crystal panel drive circuit, the first and second main gate drivers D · D ′ and the first and second The second main source driver d · d ′ is connected to the power supply circuit via SW0, the first sub-gate driver D1 and the first sub-source driver d1 are connected to the power supply circuit via SW1, the second sub-gate driver D2 and the second sub-gate driver D2 Two sub-source drivers d2 are connected to the power supply circuit via SW2. Therefore, for example, when only the main area MAR is turned ON (only SW0 is ON), only the first and second main gate drivers D · D ′ and the first and second main source drivers d · d ′ are connected to the power supply circuit. Drivers other than these are disconnected from the power supply circuit. When only the first area A1 is turned on (only SW1 is turned on), only the first sub-gate driver D1 and the first sub-source driver d1 are connected to the power supply circuit, and other drivers are disconnected from the power supply circuit.

In the present television receiver, since the aspect ratio of the display unit (main area MAR, first area A1, and second area A2) is 21: 9, as shown in FIG. An aspect ratio of 21: 9) can be displayed. In this case, the source double drive is performed on the entire display unit.

In FIG. 17, the second area A2 is driven separately from the first area A1, but as shown in FIG. 20, the second area A2 is not driven separately (the first area A1 and the second area A2). The data signal line may be shared).

In the present television receiver, as shown in FIG. 21, it is possible to adopt a double source configuration in which two data signal lines are provided in each pixel column of the main area MAR (in this case, the upper half and the lower half of the main area MAR). In each case, two lines are written simultaneously, and double source driving is performed). In this configuration, in this case, the number of data signal lines in the main area MAR is 1920 (number of pixels) × 4 (number of primary colors) × 2, and the number of scanning signal lines is 1080.

In this television receiver, as shown in FIG. 22, the entire display unit can be configured as a double source. In this configuration, for example, double source driving is performed in the main area MAR, and normal single source driving (writing for one line) is performed for each of the first area A1 and the second area A2. When full-screen display is performed as shown in FIG. 19, double source driving is performed on the entire display unit.

Example 5
In the first to fourth embodiments, the main area MAR and the sub-area SAR are driven individually (independently) to reduce power consumption, but the present invention is not limited to this. For example, as shown in FIG. 23, the entire display unit can be driven by one driver circuit (including a gate driver and a source driver) without distinguishing between the main area MAR and the sub-area SAR. Further, the backlight is not limited to LEDs (direct type and edge type), and CCFLs (cold cathode lamps) can also be used.

The display device includes a main area and a sub area in a display unit, and displays a first video having a resolution (total number of pixels) equal to or higher than a resolution (total number of pixels) of HDTV (high definition television broadcasting). The second video is displayed in the sub area while being displayed in the main area without being reduced below the resolution.

The above configuration has an advantage that viewing of the first video is not hindered by the display of the second video. In addition, since the resizing process of the first video and the overlaying process of the second video are unnecessary, there is an advantage that the load on the television receiver can be reduced.

In this display device, the main area may be a rectangle, and the number of pixels arranged on the short side may be 1080 or more.

In this display device, the main area may be a rectangle, and the number of pixels arranged on the long side may be 1920 or more.

In the present display device, the main area is rectangular, the sub area has four or more sides, and the short side of the main area and one side of the sub area may be adjacent to each other.

In this display device, the main area is rectangular, the sub area has four or more sides, and the long side of the main area and one side of the sub area are adjacent to each other.

In the present display device, the main area is rectangular, the sub area has four or more sides, the short side of the main area and one side of the sub area are adjacent to each other, and the long side of the main area is different from that of the sub area. It can also be set as the structure which 1 side adjoins.

In this display device, the main area may be a rectangle, and the size of the long side: the size of the short side may be 16: 9.

In the present display device, the display unit may be a rectangle, and a configuration in which a is a positive number and the size of the long side: the size of the short side is (16 + a): 9.

In the present display device, the second video may include one or more content videos.

In the present display device, the content video may include a user interface video.

In the present display device, the content video may include a video having a resolution higher than that of a high-definition television broadcast (HDTV).

In the present display device, the main region and the sub region may have different pixel structures.

In this display device, the main area and the sub area can be driven individually.

This display device may be configured to include a sensor for user input in the sub area.

This liquid crystal display device includes the above display device.

In the present liquid crystal display device, the backlight corresponding to the main area and the backlight corresponding to the sub area may be driven independently.

This television receiver includes the above display device.

In the present display device, the display unit is a rectangle having the horizontal direction as the longitudinal direction, and the horizontal display position of the first video and the horizontal display position of the second video are set according to a user instruction. (For example, as shown in FIG. 24, the first video that is a full HDTV video is set to the right side and the second video is set to the left side, or the first video that is a full HDTV video is set to the left side according to a user instruction. (The video is on the right side).

In the case of application to a liquid crystal display device, as shown in FIG. 25, when the display unit 1 is equally divided into 16 + a in the horizontal direction, an area corresponding to a from the left edge is a left edge area, and a is an area from the right edge. The area corresponding to the minute is the rightmost area, the area corresponding to the remaining (16-a) is the central area, the part of the backlight corresponding to the leftmost area, the part corresponding to the rightmost area, and the central area Each part to be controlled is individually controlled by the backlight control unit, so that the brightness of the backlight is changed between the area corresponding to the first video that is a full HDTV video and the area corresponding to the second video. Electric power can be reduced.

The present invention is not limited to the above-described embodiments, and those obtained by appropriately modifying the above-described embodiments based on common general technical knowledge and those obtained by combining them are also included in the embodiments of the present invention.

This display device is suitable for a television receiver, for example.

100 Television receiver MAR Main area SAR Sub area A1 1st area A2 2nd area A3 3rd area LCP LCD panel D ・ D '・ D1 ・ D2 ・ D3 Gate driver d ・ d' ・ d1 ・ d2 d3 Source driver

Claims (18)

1. The display unit has a main area and a sub area,
   A display device that displays a second video in a sub-region while displaying a first video having a resolution equal to or higher than that of HDTV (high-definition television broadcast) in a main area without lowering the resolution to less than that of HDTV.
2. 2. The display device according to claim 1, wherein the main area is rectangular and the number of pixels arranged on a short side thereof is 1080 or more.
3. 3. The display device according to claim 1, wherein the main area is rectangular and the number of pixels arranged on the long side is 1920 or more.
4. The main area is rectangular and the sub area has four or more sides,
   The display device according to any one of claims 1 to 3, wherein a short side of the main region and one side of the sub region are adjacent to each other.
5. The main area is rectangular and the sub area has four or more sides,
   The display device according to any one of claims 1 to 3, wherein a long side of the main region and one side of the sub region are adjacent to each other.
6. The main area is rectangular and the sub area has four or more sides,
   The display device according to any one of claims 1 to 3, wherein a short side of the main region and one side of the sub region are adjacent to each other, and a long side of the main region and another side of the sub region are adjacent to each other.
7. The display device according to any one of claims 1 to 6, wherein the main area is a rectangle, and the size of the long side: the size of the short side is 16: 9.
8. The display device according to claim 7, wherein the display unit is a rectangle, and a is a positive number, and the size of the long side: the size of the short side is (16 + a): 9.
9. The display device according to any one of claims 1 to 8, wherein the second video includes one or more content videos.
10. The display device according to claim 9, wherein the content video includes a user interface video.
11. The display device according to claim 9, wherein the content video includes a video having a resolution equal to or higher than a resolution of high-definition television broadcasting (HDTV).
12. The display device according to any one of claims 1 to 11, wherein a pixel structure is different between the main region and the sub region.
13. The display device according to any one of claims 1 to 11, wherein the main area and the sub area are individually driven.
14. The display device according to any one of claims 1 to 11, wherein a sensor for user input is provided in the sub area.
15. The display unit is a rectangle whose longitudinal direction is the horizontal direction,
    The display device according to claim 1, wherein the horizontal display position of the first video and the horizontal display position of the second video are set according to a user instruction.
16. A liquid crystal display device comprising the display device according to any one of claims 1 to 15.
17. The liquid crystal display device according to claim 16, wherein the backlight corresponding to the main area and the backlight corresponding to the sub area are driven independently.
18. A television receiver comprising the display device according to any one of claims 1 to 15.

Images