JP2001228818A - Display device - Google Patents

Abstract

(57) [Problem] To provide a display device in which each pixel has an active element, and has a part of image processing capability and movement processing capability on a display side. In a display device that displays an image, for each pixel, a data line that supplies a luminance value that is the brightness of the pixel to the pixel, a luminance memory that holds the supplied luminance value, A strobe line for generating a write strobe to the luminance memory; and a light emitting unit for generating luminance according to the luminance value read from the luminance memory.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for displaying a computer graphics image or an MPEG moving image, having an active component such as a switching element in each pixel.

[0002]

2. Description of the Related Art A display device for displaying computer graphics, MPEG moving images, and the like is mainly composed of an image processor for producing an image, a frame memory for storing the image, and a display unit for making the image visible to human eyes. It consists of Such a display device does not display a two-dimensional image two-dimensionally, but displays it using a one-dimensional signal finely divided into scanning lines. The part that shines at a certain moment is one point in the two-dimensional screen, and the image is displayed using the afterimage effect of the eyes. In this method, it is necessary to keep input signals even when the same image is continuously displayed. Therefore, a procedure is required in which the image processor temporarily writes the image into the frame memory and reads out the image on which one screen has been written from the frame memory to the display device.

[0003] In order to display a screen such as computer graphics or MPEG moving pictures on such a display device, a frame memory corresponding to the screen of the display device in a one-to-one correspondence is provided. The screen was displayed by reading in the order of scanning lines from and then sending it to the display unit as a one-dimensional signal. This procedure is indispensable for a display device using a cathode ray tube, but TFT-type LCDs with active elements in each pixel and plasma displays also use similar signal interfaces. is the current situation.

[0004]

However, in such a conventional display device, it is necessary for the image processor to temporarily write the image to the frame memory and to read the image after one screen has been written from the frame memory to the display device. The task is that the higher the screen resolution,
It happens frequently. Also, reading from the frame memory is usually given the highest priority in order to prevent loss of the display screen, so in order to display at a high resolution, memory reading for display occupies most of the memory access. It was happening. Also, in the current user interface used for personal computers, etc., it is common to display the screen divided by a frame called a window, but when moving that window, even if it moves to the next pixel, the frame Processing for reading data from the memory and writing it to the frame memory is required. Also, random access was not possible with an interface using signals in the order of scanning lines.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a display device in which each pixel has an active element and has a part of image processing capability and movement processing capability on the display side. To provide.

[0006]

According to a first aspect of the present invention, there is provided a display device for displaying an image, wherein the brightness of the pixel is provided for each pixel. A data line for supplying a luminance value, a luminance memory for holding the supplied luminance value, a strobe line for generating a write strobe to the luminance memory, and a luminance value read from the luminance memory. And a light emitting section for generating luminance.

According to a second aspect of the present invention, there is provided the display device according to the first aspect, further comprising a transmission unit that generates luminance by changing the transmittance of transmitted light, instead of the light emitting unit. It is characterized by having.

According to a third aspect of the present invention, in the display device for displaying an image, for each pixel, a data line for supplying a luminance value, which is the brightness of the pixel, to the pixel; First and second two brightness memories respectively holding brightness values as brightness, a first selector for selecting which of the two brightness memories to write the supplied brightness value, and A second selector for selecting which of the two luminance memories is to read a luminance value written therein, a light emitting unit for generating luminance according to the read luminance value, the first selector and the second selector. And a selector line instructing the selector to select a luminance memory to be selected.

According to a fourth aspect of the present invention, there is provided the display device according to the third aspect, further comprising a transmission unit that generates luminance by changing a transmittance of transmitted light, instead of the light emitting unit. It is characterized by having.

According to a fifth aspect of the present invention, in the display device according to the third or fourth aspect, for each of the pixels, a predetermined attribute value supplied to the pixel by the data line is provided. Attribute value memory for holding, and when writing a luminance value to the luminance memory, calculate a new attribute value supplied from the data line and a previous attribute value written to the attribute value memory. An arithmetic unit for selecting whether to newly write a luminance value and an attribute value to the luminance memory and the attribute value memory according to the result, and supplying an attribute value from the attribute value memory to the arithmetic unit. And an attribute value data line.

According to a sixth aspect of the present invention, there is provided a display device according to the third or fourth aspect, wherein a single or a plurality of reference values each holding a previous luminance value for each of the pixels. A luminance memory; and a calculator for calculating a new luminance value and a previous luminance value written in the reference luminance memory.

According to a seventh aspect of the present invention, in the display device according to any one of the first to sixth aspects, each of the pixels is connected to another pixel vertically and horizontally and diagonally adjacent to each other. An adjacent connection data line for passing the luminance value written in the luminance memory, a plurality of adjacent data selectors for selecting a direction of an arbitrary adjacent pixel for passing the luminance value, and an arbitrary data for passing the luminance value And a direction data line for instructing the direction of the adjacent pixel to the adjacent data selector.

In a display device according to an eighth aspect of the present invention, in the display device according to the fifth aspect, each pixel of the display device is written in the luminance memory together with another pixel vertically and horizontally and diagonally adjacent thereto. An adjacent connection data line for passing the luminance value or the attribute value written in the attribute value memory, and a plurality of adjacent data selectors for selecting a direction of any adjacent pixel for passing the luminance value or the attribute value. And a direction instruction line for instructing the adjacent data selector of the direction of an arbitrary adjacent pixel that transfers the luminance value or the attribute value.

According to a ninth aspect of the present invention, in the display device for displaying an image, for each pixel, a luminance value which is the brightness of the pixel and a predetermined attribute value are supplied to the pixel. A data line to be stored, first and second two brightness memories each holding a brightness value which is the brightness of the pixel,
A first selector for selecting which of the two luminance memories to write the supplied luminance value, and a second selector for selecting which of the two luminance memories to read the luminance value A plurality of sets of sub-pixels, comprising: a plurality of sets of sub-pixels having: a selector line indicating a luminance memory to be selected by the first selector and the second selector; and an attribute value memory for holding a predetermined attribute value. An averager for reading out and averaging each luminance value written in one of the luminance memories selected by the second selector of the set of the sub-pixels, and an averaging unit according to the averaged luminance value A light-emitting section for generating luminance.

According to a tenth aspect of the present invention, there is provided the display device according to the ninth aspect, further comprising, instead of the light emitting unit, a transmission unit that generates luminance by changing a transmittance of transmitted light. It is characterized by having.

In the display device according to the present invention, in the display device according to the first aspect, the light emitting section may generate a luminance corresponding to a value of the luminance memory by changing a light emitting area. It is characterized by.

According to a twelfth aspect of the present invention, in the display device according to the second aspect, the transmissive portion generates a luminance according to the value of the luminance memory by changing a transmissive area. It is characterized by.

According to a thirteenth aspect of the present invention, in the display device according to the eleventh aspect, the brightness memory holds a brightness value, which is the brightness of the pixel, as an n-digit binary number, The light emitting unit is divided into n sub-blocks each corresponding to the digit of the luminance value, and each of the sub-blocks according to the luminance value generates luminance.

According to a fourteenth aspect of the present invention, in the display device according to the twelfth aspect, the brightness memory holds a brightness value, which is the brightness of the pixel, as an n-digit binary number. The transmission unit is divided into n sub-blocks each corresponding to the digit of the luminance value, and each of the sub-blocks according to the luminance value generates luminance.

[0020]

(Embodiment 1) Hereinafter, a display device according to Embodiment 1 will be described with reference to the drawings.

First, the configuration of the pixel of the display device according to the first embodiment will be described. FIG. 1 is a diagram illustrating a configuration of one pixel among a plurality of pixels of the display device according to the first embodiment. The pixel includes a luminance memory 1, a light emitting unit 2, a strobe line 3, and a data line 4.

Next, the operation of the display device according to the first embodiment will be described with reference to the drawings. The luminance memory 1 is supplied with a luminance value which is the brightness of a pixel by a data line 4 connected to each pixel from an image processor or the like, and is used to select a pixel connected to all pixels from the image processor or the like. Whether or not to write the luminance value is selected by the strobe line 3, and the luminance value is written. The light emitting unit 2 emits light at a light emission intensity according to the luminance value written in the luminance memory 1. When changing the brightness of a pixel, the image processor or the like changes the brightness value of the brightness memory 1 of the pixel using the data line 4 and the strobe line 3 and changes the light emission intensity of the light emitting unit 2 to change the brightness of the pixel. Change brightness.

As described above, the display device according to the first embodiment has a luminance memory for each pixel, and supplies a luminance value from an image processor or the like, thereby requiring a frame memory for holding pixel values of a normal frame. This eliminates the need for a read operation from the frame memory, and has the effect of eliminating flickering and flow of images.

(Embodiment 2) Hereinafter, Embodiment 2
Will be described with reference to the drawings. First, the configuration of the pixel of the display device according to the second embodiment will be described with reference to the drawings. FIG. 2 is a diagram illustrating a configuration of one pixel among a plurality of pixels of the display device according to the second embodiment. The pixel includes a luminance memory 1, a transmission unit 21, a strobe line 3, and a data line 4.

Next, the operation of the display device according to the second embodiment will be described with reference to the drawings. The luminance memory 1 is supplied with a luminance value which is the brightness of a pixel by a data line 4 connected to each pixel from an image processor or the like, and is used to select a pixel connected to all pixels from the image processor or the like. Whether or not to write the luminance value is selected by the strobe line 3, and the luminance value is written. According to the luminance value written in the luminance memory 1, the transmission unit 2
1 generates and changes luminance by changing the transmittance of transmitted light. When changing the brightness of a pixel, the image processor or the like changes the brightness value of the brightness memory 1 of the pixel using the data line 4 and the strobe line 3, and changes the transmission unit 21.
The transmittance of the transmitted light is changed to change the brightness of the pixel.

As described above, the display device according to the second embodiment has a luminance memory for each pixel, and supplies a luminance value from an image processor or the like, thereby requiring a frame memory for holding the pixel value of a normal frame. This eliminates the need for a read operation from the frame memory, and has the effect of eliminating flickering and flow of images.

(Embodiment 3) The following describes Embodiment 3 of the present invention.
Will be described with reference to the drawings. First, the configuration of the pixel of the display device according to the third embodiment will be described. FIG. 3 is a diagram illustrating a configuration of one pixel among a plurality of pixels of the display device according to the third embodiment. The pixel includes a light emitting section 2, a data line 4, a first luminance memory 31, a second luminance memory 32, a first selector 33, a second selector 34, and a selector line 35. ing.

Next, the operation of the display device according to the third embodiment will be described with reference to the drawings. The first data line 4 is connected to all pixels from an image processor or the like.
The luminance memory 31 or the second luminance memory 32 is supplied with data. Which luminance memory is to be written is instructed by a processor or the like via a selector line 35 connected to each pixel, and is selected by a first selector 33. Meanwhile, when the luminance value is written in the first luminance memory 31, the second luminance memory 32 different from the luminance memory in which the luminance value is written is selected by the second selector 34 in reading the luminance value. Do it. In accordance with the luminance value read from the second luminance memory 32, the light emitting section 2 is emitting light and simultaneously writing the next luminance value into the first luminance memory 31. Note that the same effect can be obtained by using a transmissive unit that changes the light emission intensity by changing the transmittance of transmitted light instead of the light emitting unit. The selector line 35 is connected to both the first selector 33 and the second selector 34, and controls the input / output of the two selectors so as not to access the two luminance memories simultaneously.

As described above, in the display device according to the third embodiment, the two luminance memories of each pixel are selected by the two selectors for selecting the luminance memory, and are divided into write-only and read-only. It works without access, so screen switching is smooth.
For example, by switching the selector after rewriting the luminance values of all the pixels, there is an effect that all the screens can be simultaneously switched to a new screen.

(Embodiment 4) The following describes Embodiment 4 of the present invention.
Will be described with reference to the drawings. First, the configuration of the pixel of the display device according to the fourth embodiment will be described. FIG.
FIG. 3 is a diagram illustrating a configuration of one pixel among a plurality of pixels of the display device according to the first embodiment. Pixels include a light emitting unit 2, a data line 4, a first luminance memory 31, and a second luminance memory 3.
2, a first selector 33, a second selector 34,
Selector line 35, arithmetic unit 41, attribute value memory 42
And an attribute value data line 43.

Next, the operation of the display device according to the fourth embodiment will be described with reference to the drawings. The first data line 4 is connected to all pixels from an image processor or the like.
The luminance memory 31 or the second luminance memory 32 is supplied with data. Which luminance memory is to be written is instructed by a processor or the like via a selector line 35 connected to each pixel, and is selected by a first selector 33. Meanwhile, when the luminance value is written in the first luminance memory 31, the second luminance memory 32 different from the luminance memory in which the luminance value is written is selected by the second selector 34 in reading the luminance value. Do it. In accordance with the luminance value read from the second luminance memory 32, the light emitting section 2 is emitting light and simultaneously writing the next luminance value into the first luminance memory 31. Note that the same effect can be obtained by using a transmissive unit that changes the light emission intensity by changing the transmittance of transmitted light instead of the light emitting unit. The selector line 35 is connected to both the first selector 33 and the second selector 34, and controls the input / output of the two selectors so as not to access the two luminance memories simultaneously.

Further, pixel-specific attribute values such as depth value data used in three-dimensional graphics or the like are also supplied to each pixel from an image processor or the like. The arithmetic unit 41 calculates the new attribute value supplied from the data line 4 and the attribute value data line 4
The arithmetic processing such as comparison with the attribute value already written in the attribute value memory 42 supplied from 3 is performed. Whether to write a new attribute value in the attribute value memory 42 from the operation result,
Determines whether to write a new luminance value to the luminance memory.
For depth value data, compare the previously written depth value data with the depth value data to be written later, and use the depth value data that has the depth value data at the front and the luminance value as new data for that pixel. Thus, it is possible to remove a hidden surface in a pixel.

As described above, in the display device according to the fourth embodiment, the previous attribute value written in the attribute value memory is input to the arithmetic unit, and arithmetic operations such as comparison with new data are performed.
Whether to write a new attribute value in the attribute value memory and whether to write a new luminance value in the luminance memory based on the operation result has an effect that a complicated image can be displayed. There is an effect that becomes possible.

(Embodiment 5) The following describes Embodiment 5 of the present invention.
Will be described with reference to the drawings. First, the configuration of the pixel of the display device according to the fifth embodiment will be described. FIG. 5 is a diagram showing a configuration of one pixel among a plurality of pixels of the display device according to the fifth embodiment. The pixel is
A light emitting unit 2, a data line 4, a first luminance memory 31,
The second luminance memory 32, the first selector 33, and the second
Selector 34, selector line 35, arithmetic unit 41,
A first reference luminance memory 51 and a second reference luminance memory 5
2 is provided.

Next, the operation of the display device according to the fifth embodiment will be described with reference to the drawings. The first data line 4 is connected to all pixels from an image processor or the like.
The luminance memory 31 or the second luminance memory 32 is supplied with data. Which luminance memory is to be written is instructed by a processor or the like via a selector line 35 connected to each pixel, and is selected by a first selector 33. Meanwhile, when the luminance value is written in the first luminance memory 31, the second luminance memory 32 different from the luminance memory in which the luminance value is written is selected by the second selector 34 in reading the luminance value. Do it. In accordance with the luminance value read from the second luminance memory 32, the light emitting section 2 is emitting light and simultaneously writing the next luminance value into the first luminance memory 31. Note that the same effect can be obtained by using a transmissive unit that changes the light emission intensity by changing the transmittance of transmitted light instead of the light emitting unit. The selector line 35 is connected to both the first selector 33 and the second selector 34, and controls the input / output of the two selectors so as not to access the two luminance memories simultaneously.

Further, when displaying an MPEG moving image, the B image is input from the image processor or the like via the data line 4 and is added to the I image already written in the first reference luminance memory 51 by the arithmetic unit 41. The I + B image is written into the first reference luminance memory 51 again. Next, the P image already written in the second reference luminance memory 52 and the I + B image written in the first reference luminance memory 51 are added together by the arithmetic unit 41, and the first selector 33 Through the first luminance memory 31 or
The data is written to the second luminance memory 32. The arithmetic unit 41 is
The new luminance value supplied from the data line 4 and the first
Reference luminance memory 51 or second reference luminance memory 52
Of the luminance value written in.
A luminance value to be written to the first luminance memory 31 or the second luminance memory 32 is determined from the calculation result, and the first selector 35 selects and writes the luminance memory.

As described above, the display device according to the fifth embodiment includes the first reference luminance memory, the second reference luminance memory, and the calculator, and includes a new luminance value transmitted through the data line, Already the first reference luminance memory or the second
Arithmetic processing such as the difference between the luminance value written in the reference luminance memory and the MPEG video can be displayed smoothly, and image processing can be performed without causing memory read / write of an image processor or the like. There is an effect that can be done.

(Embodiment 6) The following describes Embodiment 6 of the present invention.
Will be described with reference to the drawings. First,
The configuration of the pixel of the display device according to the sixth embodiment will be described. FIG. 6 is a diagram showing a configuration of adjacent pixels in a display device according to the sixth embodiment. Each pixel is connected to eight vertically and horizontally diagonally adjacent pixels by an adjacent connection data line 61. Each pixel is connected to an image processor or the like by a direction data line 62. FIG. 7 is a diagram illustrating a configuration of one pixel among a plurality of pixels of the display device according to the sixth embodiment. As shown in FIG. 7, each pixel is connected to the adjacent data selector 6.
3 and the adjacent data selector 63 has a luminance memory 1
, The attribute value memory 42, the adjacent connection data line 61, and the direction data line 62 are connected.

Next, the operation of the display device according to the sixth embodiment will be described with reference to the drawings. As shown in the figure, adjacent connection data lines 61 for passing the luminance value or attribute value written in the luminance memory 1 or the attribute value memory 42 in each pixel between other pixels are vertically and horizontally inclined. Connected to eight pixels, the direction data line 62 is connected to each pixel by an image processor or the like, and can specify the direction of the pixel when data is transferred between pixels via the direction data line 62. The luminance value or attribute value written in the luminance memory 1 or the attribute value memory 42 is selected by the adjacent data selector 63 in the direction specified by the direction data line 62 and transmitted to the specified pixel through the adjacent data line 51. Can be When receiving data from another pixel, the adjacent data selector 6 receives the data from the pixel sending the data through the adjacent data line 51.
3, the data is written to the luminance memory 1 or the attribute value memory 42. Although not shown, a light emitting unit or a transmitting unit that changes light emission intensity by changing the transmittance of transmitted light emits light according to the luminance value and the attribute value. Similar effects can be obtained when the configuration of each pixel is different, for example, when the number of luminance memories or attribute value memories is different, or when a reference luminance memory is provided.

As described above, in the display device according to the sixth embodiment, each pixel includes the adjacent data selector, the direction data line,
Since adjacent connection data is provided and data can be transferred between adjacent pixels, the values of the pixels in the two-dimensional area are processed in parallel on the display device side without reading / writing the memory by an image processor or the like. There is an effect that can be.

(Embodiment 7) The following describes Embodiment 7 of the present invention.
Will be described with reference to the drawings. First, the configuration of the pixel of the display device according to the seventh embodiment will be described with reference to the drawings. FIG. 8 is a diagram showing a configuration of one pixel among a plurality of pixels of the display device according to the seventh embodiment. The pixel includes a first sub-pixel 81 and a second sub-pixel 82
, A third sub-pixel 83, a fourth sub-pixel 84, an averaging unit 85, and the light emitting unit 2. Each of the sub-pixels includes a data line 4, a first luminance memory 31, a second luminance memory 32, a first selector 33, a second selector 34, and a selector line 35.

Next, the operation of the display device according to the seventh embodiment will be described. The image processor or the like treats each of the sub-pixels 81, 82, 83 and 84 as four ordinary pixels. Each sub-pixel 81, 82, 8 from an image processor or the like
A first luminance memory 31 or a second luminance memory 32 for each pixel by data lines 4 connected to
Is supplied with data. Which luminance memory is to be written is instructed by a processor or the like via a selector line 35 connected to each pixel, and is selected by a first selector 33. Meanwhile, when the luminance value is written in the first luminance memory 31, the second luminance memory 32 different from the luminance memory in which the luminance value is written is selected by the second selector 34 in reading the luminance value. Do it. The averaging unit 85 averages the luminance values read from the sub-pixels 81, 82, 83, 84. The light emitting unit 2 emits light according to the average luminance value output from the averaging unit 85. Note that the same effect can be obtained by using a transmissive unit that changes the light emission intensity by changing the transmittance of transmitted light instead of the light emitting unit. Further, when the configuration of the sub-pixels is different, the same effect can be obtained even when, for example, an attribute value memory is provided and the attribute value is also supplied from the image processor.

As described above, the display device according to the seventh embodiment is provided with an averaging unit which originally constitutes one pixel by a plurality of sub-divided sub-pixels and averages the luminance values of the respective sub-pixels. Since the light emission is performed in accordance with the luminance value averaged by the averaging section, the display device can reduce the jaggedness of the edge portion of the drawn figure or the like.

(Eighth Embodiment) An eighth embodiment will be described below.
Will be described with reference to the drawings. First,
The configuration of the pixel of the display device according to the eighth embodiment will be described. FIG. 9 is a diagram showing a configuration of one pixel among a plurality of pixels of the display device according to the eighth embodiment. The pixel includes a luminance memory 1, a light emitting unit 2, a strobe line 3,
And a data line 4.

Next, the operation of the display device according to the eighth embodiment will be described with reference to the drawings. The luminance memory 1 is supplied with a luminance value which is the brightness of a pixel by a data line 4 connected to each pixel from an image processor or the like, and is used to select a pixel connected to all pixels from the image processor or the like. Whether or not to write the luminance value is selected by the strobe line 3, and the luminance value is written. In accordance with the luminance value written in the luminance memory 1, the light emitting unit 2
Generates and changes luminance by changing the light emitting area. When changing the brightness of a pixel, the image processor or the like changes the brightness value of the brightness memory 1 of the pixel using the data line 4 and the strobe line 3, changes the light emitting area of the light emitting unit 2, and changes the brightness of the pixel. Change brightness.

As described above, in the display device according to the eighth embodiment, the luminance of the light emitting portion of the pixel is changed by changing the area of the light emitting portion instead of changing the light emission amount. D / A conversion is not required, and there is an effect that luminance control can be realized with digital signals as they are.

(Embodiment 9) Hereinafter, Embodiment 9 will be described.
Will be described with reference to the drawings. First, the structure of the pixel of the display device according to the ninth embodiment will be described with reference to the drawings. FIG. 10 is a diagram showing a configuration of one pixel among a plurality of pixels of the display device according to the ninth embodiment.
The pixel includes a luminance memory 1, a transmission unit 21, a strobe line 3, and a data line 4.

Next, the operation of the display device according to the ninth embodiment will be described with reference to the drawings. The luminance memory 1 is supplied with a luminance value which is the brightness of a pixel by a data line 4 connected to each pixel from an image processor or the like, and is used to select a pixel connected to all pixels from the image processor or the like. Whether or not to write the luminance value is selected by the strobe line 3, and the luminance value is written. According to the luminance value written in the luminance memory 1, the transmission unit 2
No. 1 generates and changes luminance by changing the transmission area. When changing the brightness of a pixel, the image processor or the like changes the brightness value of the brightness memory 1 of the pixel using the data line 4 and the strobe line 3 and changes the transmission area of the transmission unit 21 to change the brightness of the pixel. Change brightness.

As described above, in the display device according to the ninth embodiment, the transmission portion of the pixel does not change the transmittance of the transmitted light, but changes the area of the transmission portion to change the luminance. Therefore, D / A conversion is not required, and there is an effect that luminance control can be realized with a digital signal as it is.

(Embodiment 10) Hereinafter, a display device according to Embodiment 10 will be described with reference to the drawings. First, the configuration of the display device according to the tenth embodiment will be described with reference to the drawings. FIG. 11 is a diagram showing a configuration of one pixel among a plurality of pixels of the display device according to the tenth embodiment. The pixel includes a luminance memory 1, a light emitting unit 2, a strobe line 3, and a data line 4.

Next, the operation of the display device according to the tenth embodiment will be described with reference to the drawings. The luminance memory 1 is supplied with a luminance value which is the brightness of a pixel by a data line 4 connected to each pixel from an image processor or the like, and is used to select a pixel connected to all pixels from the image processor or the like. Whether or not to write the luminance value is selected by the strobe line 3, and the luminance value is written. According to the luminance value written in the luminance memory 1, the light emitting section 2 generates and changes the luminance by changing the light emitting area. When changing the brightness of a pixel, the image processor or the like changes the brightness value of the brightness memory 1 of the pixel using the data line 4 and the strobe line 3, changes the light emitting area of the light emitting unit 2, and changes the brightness of the pixel. Change brightness.

Here, the light emitting section 2 has 1, 2, 4, 8, 1
The area is divided into areas of every power of two, such as 6. The luminance memory 1 stores a luminance value in a binary number. Because the value of a binary digit is a power of two,
By connecting the pattern of each digit and the light emitting unit 2 subdivided into the size of the digit, the luminance memory 1
And the light emitting area of the light emitting unit 2 has a one-to-one correspondence. When changing the brightness of a pixel, the image processor or the like changes the brightness value of the brightness memory 1 of the pixel using the data line 4 and the strobe line 3 and changes the brightness of the light emitting unit 2 to change the brightness of the pixel. To change. Note that the shape of the subdivided light emitting unit 2 is not limited to the shape shown in FIG.

As described above, in the display device according to the tenth embodiment, the light emission area is changed by comparing the light emission area of light emitting section 2 with each digit of the luminance value stored in binary and changing the light emission area. Therefore, there is an effect that the luminance value can be changed without changing the digital signal without using a digital-analog converter or the like.

Embodiment 11 Hereinafter, a display device according to Embodiment 11 will be described with reference to the drawings. First, the configuration of the display device according to the eleventh embodiment will be described with reference to the drawings. FIG. 12 is a diagram showing a configuration of one pixel among a plurality of pixels of the display device according to the eleventh embodiment. The pixel includes a luminance memory 1, a transmission unit 21, a strobe line 3, and a data line 4.

Next, the operation of the display device according to the eleventh embodiment will be described with reference to the drawings. The luminance memory 1 is supplied with a luminance value which is the brightness of a pixel by a data line 4 connected to each pixel from an image processor or the like, and is used to select a pixel connected to all pixels from the image processor or the like. Whether or not to write the luminance value is selected by the strobe line 3, and the luminance value is written. In accordance with the luminance value written in the luminance memory 1, the transmission unit 21 generates and changes the luminance by changing the transmission area. When changing the brightness of a pixel, the image processor or the like changes the brightness value of the brightness memory 1 of the pixel using the data line 4 and the strobe line 3 and changes the transmission area of the transmission unit 21 to change the brightness of the pixel. Change brightness.

Here, the transmission section 21 has 1, 2, 4, 8,
The area is divided into areas of each power of 2 such as 16. The luminance memory 1 stores a luminance value in a binary number. Because the value of a binary digit is a power of two,
By connecting the pattern of each digit and the transmissive portion 21 subdivided into the size of the digit, the luminance value of the luminance memory 1 and the transmissive area of the transmissive portion 21 correspond one to one. ing. When changing the brightness of a pixel, the image processor or the like transmits the data of the brightness memory 1 of the pixel to the data line 4.
And the strobe line 3 to change the brightness of the transmissive portion 21 to change the brightness of the pixel. It should be noted that the shape of the subdivided transmission section 21 is not limited to the shape shown in FIG.

As described above, in the display device according to the eleventh embodiment, the transmission area is changed by comparing the transmission area of the transmission section 21 with each digit of the luminance value stored in binary and changing the transmission area. Therefore, there is an effect that the luminance value can be changed without changing the digital signal without using a digital-analog converter or the like.

[0058]

As described above, according to the display device of the first aspect of the present invention, in the display device for displaying an image,
For each pixel, a data line that supplies the pixel with a luminance value that is the brightness of the pixel, a luminance memory that holds the supplied luminance value, and a strobe line that generates a write strobe to the luminance memory. And a light emitting unit that generates luminance according to the luminance value read from the luminance memory, so that a frame memory for holding pixel values of a normal frame is not required, and reading operation from the frame memory can be eliminated. This has the effect of eliminating flickering and flowing of the image.

According to the display device of the second aspect of the present invention, in the display device of the first aspect, luminance is generated by changing the transmittance of transmitted light instead of the light emitting section. Since a transparent portion is provided, a reading operation from the frame memory can be eliminated without the need for a frame memory for holding the pixel values of the normal frame, and there is an effect that flickering and flow of the image are eliminated.

According to the display device of the third aspect of the present invention, in the display device for displaying an image, for each pixel, a data line for supplying a luminance value which is the brightness of the pixel to the pixel. A first and a second two brightness memories respectively holding a brightness value which is the brightness of the pixel; and a first to select which of the two brightness memories the supplied brightness value is to be written to. A selector, a second selector for selecting which of the two luminance memories the luminance value written is read, a light-emitting unit for generating a luminance according to the read luminance value, A selector line for instructing the second selector to specify a luminance memory to be selected. Two luminance memories of each pixel are selected by two selectors for selecting a luminance memory, and are dedicated to writing and reading. Since function without divided are simultaneously accessing the same luminance memory, screen switching is Sum - has the effect of enabling the figure, by switching the selector after example rewrites the luminance value of all pixels,
This has the effect that all screens can be simultaneously switched to a new screen.

According to the display device of the fourth aspect of the present invention, in the display device of the third aspect, the luminance is generated by changing the transmittance of transmitted light instead of the light emitting section. The two brightness memories of each pixel are selected by two selectors for selecting the brightness memory, and are divided into write-only and read-only, and function without accessing the same brightness memory at the same time. There is an effect that the switching can be performed smoothly, for example, by switching the selector after rewriting the luminance values of all the pixels, there is an effect that the entire screen can be simultaneously switched to a new screen.

According to the display device described in claim 5 of the present invention, in the display device described in claim 3 or 4, for each of the pixels, the data is supplied to the pixel via the data line. An attribute value memory for holding a predetermined attribute value, a new attribute value supplied from the data line when writing a luminance value to the luminance memory, and a previous attribute written to the attribute value memory. And an arithmetic unit for selecting whether to newly write or not to write the luminance value and the attribute value to the luminance memory and the attribute value memory, respectively, according to the result, and the arithmetic unit from the attribute value memory. And an attribute value data line for supplying an attribute value to the attribute value memory.
Performs operations such as comparison with new data and decides whether to write a new attribute value in the attribute value memory and whether to write a new luminance value in the luminance memory based on the operation result, enabling complex image display For example, if depth value data used in three-dimensional graphics or the like is used as an attribute value, the depth value data previously written can be used,
By comparing the depth value data to be written later, the depth value data having the depth value data in front and the luminance value as new data of the pixel, it is possible to remove the hidden surface in the pixel on the display side. There is an effect.

According to the display device of the sixth aspect of the present invention, in the display device of the third or fourth aspect, each of the pixels retains a previous luminance value. One or more reference brightness memories, including a new brightness value, a calculator for calculating the previous brightness value written to the reference brightness memory, a new brightness value sent through the data line, Calculations such as the difference between the luminance value already written to the reference luminance memory can be performed, so that MPEG moving images can be displayed smoothly, and image processing can be performed without causing memory read / write of an image processor or the like. There is an effect that can be done.

According to the display device described in claim 7 of the present invention, in the display device described in any one of claims 1 to 6, each of the pixels is vertically and horizontally obliquely adjacent to each other. Pixels, an adjacent connection data line that passes the luminance value written in the luminance memory, a plurality of adjacent data selectors for selecting the direction of any adjacent pixel that passes the luminance value, and the luminance value And a direction data line for instructing the adjacent data selector the direction of any adjacent pixel to be passed, so that the brightness value can be passed between the upper, lower, left, and right pixels, so that the value of the pixel in the two-dimensional area is There is an effect that processing can be performed in parallel on the display device side without causing memory read / write of an image processor or the like. In addition, there is an effect that a two-dimensional image transfer often used for a GUI can be performed without using an image processor or the like.

According to the display device described in claim 8 of the present invention, in the display device described in claim 5, each pixel of the display device is different from the other pixels vertically, horizontally, and diagonally adjacent to each other in the luminance. Selecting a direction of an adjacent connection data line for passing a luminance value written in a memory or an attribute value written in the attribute value memory and a direction of an arbitrary adjacent pixel for passing the luminance value or the attribute value; And a direction indicating line for instructing the adjacent data selector of the direction of an arbitrary adjacent pixel that transfers the luminance value or the attribute value. The transfer of the luminance value or the attribute value between the upper, lower, left, and right pixels. Can be processed in parallel, so that the values of the pixels in the two-dimensional area can be processed in parallel on the display device side without causing memory reading and writing of an image processor or the like. It has a clear effect. In addition, there is an effect that two-dimensional image transfer, which is often used for GUI, can be performed without using an image processor.

According to the display device of the ninth aspect of the present invention, in the display device for displaying an image, for each pixel, a luminance value which is the brightness of the pixel and a predetermined value are assigned to the pixel. A data line for supplying an attribute value of the pixel, a first and a second luminance memory for respectively retaining a luminance value which is the brightness of the pixel, and the supplied luminance value to which of the two luminance memories. A first selector for selecting whether to write, a second selector for selecting which of the two luminance memories to read a luminance value written to, and a first selector for selecting the first selector and the second selector; A plurality of sets of sub-pixels having a selector line that indicates a luminance memory to perform, and an attribute value memory for holding a predetermined attribute value;
An averaging unit for reading out and averaging each of the luminance values written in one of the luminance memories selected by the second selector, for a plurality of sets of the sub-pixels, according to the averaged luminance value And a light-emitting unit that generates a luminance, and emits light according to the luminance value averaged by the averaging unit, so that the display device side reduces the jaggedness of an edge portion of a drawn figure or the like. There are effects that can be performed.

According to the display device of the tenth aspect, in the display device of the ninth aspect, instead of the light-emitting portion, a transmissive portion that generates luminance by changing the transmittance of transmitted light. The light emission is performed in accordance with the luminance value averaged by the averaging unit, so that the display device can reduce the jaggedness of the edge portion of the drawn figure or the like. .

According to the display device of the present invention, in the display device of the first aspect, the light emitting section generates a luminance corresponding to a value of the luminance memory by changing a light emitting area. This eliminates the need for D / A conversion, and has the effect of realizing brightness control using digital signals.

According to the display device of the twelfth aspect, in the display device of the second aspect, the transmission section generates a luminance according to the value of the luminance memory by changing a transmission area. This eliminates the need for D / A conversion, and has the effect of realizing brightness control using digital signals.

According to the display device of the present invention, in the display device of the present invention, the brightness memory holds a brightness value which is the brightness of the pixel as an n-digit binary number. The light-emitting unit is divided into n sub-blocks each corresponding to the digit of the luminance value, and each of the sub-blocks according to the luminance value generates luminance. The brightness was changed by comparing each digit of the brightness value stored in binary and by changing the light emitting area, so the brightness value was changed without changing the digital signal without using a digital-to-analog converter etc. There is an effect that can be.

According to a fourteenth aspect of the present invention, in the display device of the twelfth aspect, the brightness memory holds a brightness value, which is the brightness of the pixel, as an n-digit binary number. The transmitting unit is divided into n sub-blocks each corresponding to the digit of the luminance value, and each of the sub-blocks according to the luminance value generates luminance. There is an effect that the luminance value can be changed without changing the digital signal without any change.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a pixel of a display device according to a first embodiment.

FIG. 2 is a diagram illustrating a configuration of a pixel of a display device according to a second embodiment.

FIG. 3 is a diagram showing a configuration of a pixel of a display device according to a third embodiment.

FIG. 4 is a diagram showing a configuration of a pixel of a display device according to a fourth embodiment.

FIG. 5 is a diagram showing a configuration of a pixel of a display device according to a fifth embodiment.

FIG. 6 is a diagram illustrating a relationship between adjacent pixels in a display device according to a sixth embodiment.

FIG. 7 is a diagram illustrating a configuration of a pixel of a display device according to a sixth embodiment.

FIG. 8 is a diagram showing a configuration of a pixel of a display device according to a seventh embodiment.

FIG. 9 is a diagram showing a configuration of a pixel of a display device according to an eighth embodiment.

FIG. 10 is a diagram showing a configuration of a pixel of a display device according to a ninth embodiment.

FIG. 11 is a diagram showing a configuration of a pixel of a display device according to a tenth embodiment.

FIG. 12 is a diagram showing a configuration of a pixel of a display device according to Embodiment 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Luminance memory 2 Light emitting part 3 Strobe line 4 Data line 21 Transmissive part 31 First luminance memory 32 Second luminance memory 33 First selector 34 Second selector 35 Selector line 41 Calculator 42 Attribute value memory 43 Attribute value Data line 51 First reference luminance memory 52 Second reference luminance memory 61 Adjacent connection data line 62 Direction data line 63 Adjacent data selector 81 First sub-pixel 82 Second sub-pixel 83 Third sub-pixel 84 Fourth Sub-pixel 85 of the averaging unit

Claims (14)

[Claims] 1. A display device for displaying an image, wherein, for each pixel, a data line for supplying a luminance value, which is the brightness of the pixel, to the pixel; a luminance memory for holding the supplied luminance value; A display device, comprising: a strobe line that generates a strobe for writing to the luminance memory; and a light emitting unit that generates luminance according to the luminance value read from the luminance memory. 2. The display device according to claim 1, further comprising, instead of the light emitting unit, a transmission unit that generates luminance by changing the transmittance of the transmitted light. 3. A display device for displaying an image, wherein for each pixel, a data line for supplying a luminance value, which is the brightness of the pixel, to the pixel, and a luminance value, which is the brightness of the pixel, are held, respectively. First and second two luminance memories; a first selector for selecting which of the two luminance memories to write the supplied luminance value; and one of the two luminance memories being written. A second selector for selecting whether to read a luminance value, a light emitting unit for generating a luminance according to the read luminance value, and a luminance memory to be selected by the first selector and the second selector. A display device comprising: a selector line. 4. The display device according to claim 3, further comprising a transmission unit that generates luminance by changing a transmittance of transmitted light, instead of the light emitting unit. 5. The display device according to claim 3, wherein for each of the pixels, an attribute value memory for holding a predetermined attribute value supplied to the pixel by the data line; When a luminance value is written to the luminance memory, a new attribute value supplied from the data line and a previous attribute value written to the attribute value memory are calculated, and a new luminance value is calculated according to the result. An arithmetic unit for selecting whether to write or not write a value and an attribute value to the luminance memory and the attribute value memory, respectively, and an attribute value data line for supplying an attribute value from the attribute value memory to the arithmetic unit, A display device characterized by the above-mentioned. 6. The display device according to claim 3, wherein, for each of the pixels, a single or a plurality of reference luminance memories holding previous luminance values, a new luminance value, A computing unit for computing a previous luminance value written in the reference luminance memory. 7. The display device according to claim 1, wherein, for each of the pixels, another pixel vertically and horizontally and diagonally adjacent thereto and the luminance value written in the luminance memory. A plurality of adjacent data selectors that select the direction of any adjacent pixel that passes the luminance value, and the direction of any adjacent pixel that passes the luminance value to the adjacent data selector. And a direction data line for indicating. 8. The display device according to claim 5, wherein each pixel of the display device is written in the brightness memory or the attribute value memory with another pixel vertically and horizontally and diagonally adjacent thereto. An adjacent connection data line for transferring the attribute value, a plurality of adjacent data selectors for selecting the direction of the brightness value or an arbitrary adjacent pixel for transferring the attribute value, and transferring the brightness value or the attribute value And a direction instruction line for instructing the adjacent data selector of the direction of an arbitrary adjacent pixel to be displayed. 9. A display device for displaying an image, for each pixel, a data line for supplying a luminance value, which is the brightness of the pixel, and a predetermined attribute value to the pixel, and a brightness of the pixel. First and second pixels respectively holding a luminance value
And the supplied luminance values are stored in the two luminance memories.
A first selector for selecting which of the two luminance memories is to be written, a second selector for selecting which of the two luminance memories is to be read, and the first selector and the first selector. A plurality of sets of sub-pixels having a selector line indicating a luminance memory to be selected by a second selector and an attribute value memory for holding a predetermined attribute value; An averager for reading and averaging each luminance value written in one of the luminance memories selected by the selector 2; and a light emitting unit for generating luminance according to the averaged luminance value. A display device, characterized in that: 10. The display device according to claim 9, further comprising, instead of the light emitting unit, a transmission unit that generates luminance by changing the transmittance of the transmitted light. 11. The display device according to claim 1, wherein the light emitting unit generates a luminance according to a value of the luminance memory by changing a light emitting area. 12. The display device according to claim 2, wherein the transmission unit generates a luminance according to a value of the luminance memory by changing a transmission area. 13. The display device according to claim 11, wherein the brightness memory stores a brightness value that is a brightness of the pixel,
The n-digit binary number is held, and the light-emitting unit is divided into n sub-blocks corresponding to the respective digits of the luminance value, and each of the sub-blocks according to the luminance value generates luminance. Display device. 14. The display device according to claim 12, wherein the brightness memory stores a brightness value that is the brightness of the pixel,
The n-digit binary number is held, and the transmission unit is divided into n sub-blocks corresponding to the respective digits of the luminance value, and each of the sub-blocks according to the luminance value generates luminance. Display device.