JP2008176124A - Display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display apparatus capable of inexpensively improving visibility and design property by eliminating the indentation feel on the outer periphery of a prescribed design. <P>SOLUTION: Self-emission dot devices D are lined up in a matrix form. A prescribed design light emitting means makes the self-emission dot devices D arranged in a prescribed design region A<SB>21</SB>emit light thereby making the prescribed design be displayed. An outer peripheral light emitting means makes the self-emission dot devices D arranged in the outer peripheral region A<SB>22</SB>disposed along the outer periphery of the prescribed design region A<SB>21</SB>in the state of holding the non-light emitting region A<SB>3</SB>in-between emit light. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device, and in particular, a display device having a plurality of pixels arranged in a matrix and predetermined design light emitting means for displaying the predetermined design by causing the pixels arranged in a predetermined design region to emit light. It is about.

For example, the conventional display device shown in FIG. 7 has been proposed. As shown in the figure, the display device includes a plurality of self-luminous dot devices D (pixels) arranged in a matrix and a driver (not shown). The self-light emitting dot device D is composed of an element that emits light when power is supplied, such as a light emitting diode. Driver emits self-luminous dot devices D which are arranged in a predetermined design area A ₁ shown in black in the figure, a predetermined design by turning off the self-luminous dot devices D placed anywhere other than the predetermined design area A ₁ ( In the example shown in FIG. 7, the numeral “2”) is displayed.
Japanese Utility Model Publication No. 51-15877

  In the conventional display device described above, various designs can be displayed by arranging the self-emitting dot devices D in a matrix. However, as shown in FIG. 7, when the number of pixels is small, a jagged feeling is generated in a curved portion or a hatched portion on the outer periphery of the predetermined design, and there are problems in both visibility and design.

  In view of this, for example, a device has been proposed that reduces anti-aliasing by applying anti-aliasing that reduces the light emission luminance of the self-luminous dot device D closer to the outer periphery of the predetermined design area A1. However, in this case, it is necessary to use a self-luminous dot device D whose brightness can be adjusted in a plurality of stages, which is problematic in terms of cost.

  Accordingly, the present invention focuses on the above-described problems, and an object of the present invention is to provide a display device that can eliminate the jagged feeling on the outer periphery of the predetermined design and can improve the visibility and design at a low cost. .

  The invention according to claim 1, which has been made in order to solve the above-described problem, is a predetermined design light emission in which a plurality of pixels arranged in a matrix and the pixels arranged in a predetermined design area are caused to emit light to display the predetermined design. The predetermined design light emitting means emits the pixels arranged in an outer peripheral region provided along an outer periphery of the predetermined design region with a non-light emitting region for turning off the pixels interposed therebetween. The present invention resides in a display device having outer peripheral light emitting means.

  According to the first aspect of the present invention, the outer peripheral light emitting means causes the pixels disposed in the outer peripheral region provided along the outer periphery of the predetermined design region to emit light with the non-light emitting region interposed therebetween. Therefore, since the non-light-emitting region is sandwiched between the predetermined design region and the outer peripheral region, the non-light-emitting region is visually recognized as being lightly emitted by being affected by light from the predetermined region and the outer peripheral region. For this reason, pseudo gradation increases and an anti-alias effect is produced, and the roughness of the pixel becomes inconspicuous, and the jagged feeling on the outer periphery of the predetermined design can be eliminated.

  The invention according to claim 2 is characterized in that the outer peripheral light emitting means provides the outer peripheral region only in a portion corresponding to a shadow of the predetermined design in the periphery of the predetermined design region. It exists in the display apparatus of description.

  According to the second aspect of the present invention, since the outer peripheral light emitting means provides the outer peripheral region only in the portion corresponding to the shadow of the predetermined design in the periphery of the non-light emitting region, the predetermined design is visually recognized in three dimensions. .

  As described above, according to the first aspect of the present invention, since the non-light emitting region is sandwiched between the predetermined design region and the outer peripheral region, the non-light emitting region is affected by light from the predetermined region and the outer peripheral region. It is visually recognized as if light is emitted. For this reason, the pseudo gradation increases and an anti-alias effect is created, the roughness of the pixel becomes inconspicuous, and the jagged feeling of the outer periphery of the predetermined design can be eliminated, so that the visibility and design can be improved at low cost. Can be planned.

  According to the invention described in claim 2, since the predetermined design is visually recognized in three dimensions, it is possible to further improve the visibility and the design.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a virtual image display device incorporating the display device of the present invention. FIG. 2 is a block diagram of the display device shown in FIG. FIG. 3 is a diagram showing an example of an image displayed on the display shown in FIG. As shown in the figure, the virtual image display device is accommodated in the dashboard 1.

  The virtual image display device includes a display device 2 and mirrors 3 and 4 that reflect light from the display device 2 and guide it to the window W. The display device 2 is mounted on a wiring board 5 and a heat radiating plate 6 is attached to the back surface thereof. Further, the automobile meter includes a case 7 that accommodates the display device 2, the mirrors 3 and 4, the wiring board 5, and the heat sink 6. A back cover 8 is attached to an opening provided below the case 7. A projection window 9 is attached to the opening provided above the case 7.

  According to the virtual image display device described above, the light emitted from the display device 2 is reflected by the mirrors 3 and 4, then passes through the projection window 9 and is guided to the window W. The light guided to the window W is reflected by the window W and reaches the driver view eye. Thereby, the driver visually recognizes the virtual image reflected in the window W.

  As shown in FIG. 2, the display device 2 includes a display 10, a Y driver 21, an X driver 22, and a central processing unit (CPU) 23. The display 10 has a self-luminous dot device D (= pixel) of Y rows and X columns arranged in a matrix. The self-emitting dot device D is composed of an element that emits light when a voltage is supplied, such as a light-emitting diode. This indicator 10 is arranged on a control panel of a vehicle, for example. As shown in FIGS. 3 and 4, a predetermined design such as a number is displayed on the display 10.

Y driver 21 is connected to a provided at one end of the self-luminous dot device D of each row Y row electrode E _Y. X driver 22 is connected to the X row electrode E _X provided at the other end of the self-luminous dot device D in each column. That is, each light emitting dot device D is sandwiched between the Y-row electrode E _Y and X column electrode E _X. The X driver 22 and the Y driver 21 are controlled by the CPU 23. The CPU 23 is connected to an EEPROM 24. For example, image data as shown in FIG. 4 is stored in the EEPROM 24.

Details of the image data shown in FIG. 4 will be described with reference to FIG. As shown in FIG. 3, the image data is composed of a light emitting area A ₂ represented by black and a non-light emitting area A ₃ represented by white or shaded. Emission region A ₂ is a predetermined design area A _21, which corresponds to a predetermined design, is composed of the outer peripheral region A ₂₂ Metropolitan provided along the outer periphery of the predetermined design area A ₂₁ in the non-emission region across the A ₃ state Yes. The outer peripheral area A ₂₂ is provided only in the portion corresponding to the shadow in the outer periphery of the predetermined design.

Next, the display operation of the display device having the above-described configuration will be described below. The CPU 23 reads image data from the EEPROM 24. Then, the CPU 23 drives the Y driver 21 and the X driver 22 according to the read image data. Specifically, the CPU 23 outputs a vertical scanning signal to the Y driver 21. Y driver 21 in synchronization with the vertical scanning signal sequentially selects one of the Y-row electrode E _Y, capable of application of a voltage to the self-luminous dot devices D connected to the selected Y row electrode E _Y Leave it in a state.

The CPU 23 outputs a horizontal synchronization signal to the X driver 22 and outputs image data to the X driver 22 in synchronization with the horizontal synchronization signal. X driver 22, a horizontal synchronizing signal in synchronization with sequentially selecting one of the X row electrode E _X, arranged self-luminous dot devices D connected to the selected X row electrode E _X is the light-emitting region A ₂ If so, a voltage is applied to the self-luminous dot device D. That is, the self-light emitting dot device D arranged at the intersection of the row selected by the Y driver 21 and the column selected by the X driver 22 emits light. Then, the voltage corresponding to the image data is displayed on the display 10 by sequentially applying a voltage to the self-luminous dot device D in the X row and the Y column by the Y driver 21 and the X driver 22.

By the above operation, as shown in FIG. 3, a predetermined design and emission self-luminous dot devices D disposed in the light-emitting area A ₂ shown in black ( "2" in this case number) is displayed. As is clear from the above, the EEPROM 24 for storing image data and the CPU 23 for displaying the image data stored in the EEPROM 24 correspond to the predetermined design light emitting means and the peripheral light emitting means in the claims.

According to the display device described above, the CPU 23 causes the self-light emitting dot device D disposed in the outer peripheral area A ₂₂ provided along the outer periphery of the predetermined design area A ₂₁ to emit light with the non-light emitting area A ₃ interposed therebetween. . Thus, non-light-emitting region A ₃ shown in FIG hatching sandwiched between a given design area A ₂₁ and the peripheral region A ₂₂ is affected by the light from the predetermined region A ₂₁ and outer peripheral regions A _22, thin light emitting It is visually recognizable. For this reason, even if the self-luminous dot device D whose brightness can be adjusted in a plurality of stages is not used, a pseudo gradation increases and an anti-alias effect is produced, and the roughness of the dots (pixels) becomes inconspicuous. The jagged feeling on the outer periphery can be eliminated, and the visibility and design can be improved at low cost.

Further, as shown in the prior art of FIG. 6 (A), is simply to emit a predetermined design area A ₂₁ is viewed flat is predetermined design lacks design. However, according to the display device described above, as shown in FIG. 6B, the CPU 23 provides the outer peripheral area A ₂₂ only in the portion corresponding to the shadow of the predetermined design in the periphery of the predetermined design area A ₂₁ . Therefore, the predetermined design is visually recognized in three dimensions, and the visibility and design can be further improved.

Further, according to the above-described embodiment, as shown in FIG. 3, the outer peripheral area A ₂₂ is moved with respect to the predetermined design area A ₂₁ in both the right direction and the lower direction in the figure. Is not limited to this. The outer peripheral area A ₂₂ may be provided along the outer periphery of the predetermined design area A _{21 with} the non-light emitting area A ₃ interposed therebetween. For example, as shown in FIG. 5, the display basic figure shown in FIG. It may be moved in the middle right direction and downward direction. However, better shown in FIG. 3, since it is possible to increase the area of the non-light-emitting region A ₃ sandwiched between a given design area A ₂₁ and the peripheral region A _22, may result in more anti-aliasing effect it can.

  Further, according to the above-described embodiment, the self-luminous dot device D is used as the pixel, but the present invention is not limited to this. Any pixel can be used as long as it can be arranged in a matrix and control light emission. For example, liquid crystal elements arranged in a matrix may be used.

Further, according to the above-described embodiment, the outer peripheral area A ₂₂ is provided only in the portion corresponding to the shadow of the predetermined design in the periphery of the predetermined design area A ₂₁ , but the present invention is not limited to this. Absent. The outer peripheral area A ₂₂ may be provided along the outer periphery of the predetermined design area A _{21 with} the non-light emitting area A ₃ interposed therebetween. For example, the outer peripheral area A ₂₂ may be provided along the entire periphery of the predetermined design area A ₂₁ .

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

It is a block diagram which shows one Embodiment of the meter for motor vehicles incorporating the display apparatus of this invention. It is a block diagram of the display apparatus shown in FIG. It is a figure which shows an example of the image displayed on the indicator shown in FIG. It is a figure which shows an example of the image displayed on the indicator shown in FIG. It is a figure which shows another example of the image displayed on the display shown in FIG. (A) is a figure which shows an example of the image displayed on the conventional display, (B) is a figure which shows an example of the image displayed on the display shown in FIG. It is a figure which shows the example of a conventional display.

Explanation of symbols

D Self-luminous dot device (pixel)
23 CPU (predetermined design light emitting means, outer periphery light emitting means)

Claims (2)

In a display device having a plurality of pixels arranged in a matrix and predetermined design light emitting means for causing the pixels arranged in a predetermined design region to emit light and displaying the predetermined design.
The predetermined design light emitting means includes outer peripheral light emitting means for emitting light from the pixels arranged in an outer peripheral area provided along an outer periphery of the predetermined design area with a non-light emitting area for turning off the pixels interposed therebetween. Characteristic display device.   2. The display device according to claim 1, wherein the outer peripheral light emitting unit is configured to provide the outer peripheral region only in a portion corresponding to a shadow of the predetermined design in a peripheral edge of the predetermined design region.

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