Electronic device, electronic equipment, and driving method for electronic device
A technology of electro-optical devices and electro-optical components, which can be applied to instruments, static indicators, etc., and can solve problems such as deterioration of display area clarity, narrowing of connection distances, difficulty in connecting pixel matrix substrates, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 approach
[0062] An embodiment of the present invention is an electro-optical device including a drive circuit using an EL element as an electro-optical element. FIG. 1 shows an overall block diagram of an electronic device including such an electro-optical device.
[0063] As shown in FIG. 1 , such an electronic device has a function of displaying a predetermined image by a computer, and includes at least a display circuit 1 , a drive controller 2 and a computer device 3 .
[0064] The computer device 3 is a general-purpose or special-purpose computer device, and outputs data (gradation display data) representing grayscales expressed as intermediate values for each pixel (dot) to the drive controller 2 . In the case of a color image, halftones of dots displaying each primary color are designated by grayscale display data, and the synthesis of halftones of dots of each designated primary color is expressed as a specific color pixel.
[0065] The drive controller 2 is formed on a subs...
no. 2 approach
[0088] The second embodiment of the present invention is a further development of the electronic device and electronic equipment shown in the above-mentioned first embodiment.
[0089] FIG. 5 shows the configuration of a specific electronic device according to the second embodiment, and FIG. 8 shows a timing chart explaining its operation. FIG. 5 shows one color pixel PmnC that performs color display, a current latch circuit Lm that supplies current to the color pixel, a D / A converter CIm, and a current amplifier circuit Bm. Blocks (indicated by dotted lines) of each pixel circuit, current amplifier circuit, and constant current output circuit (D / A converter) CIm are the same as those in the first embodiment, and thus will be briefly described. In addition, FIG. 7 shows a circuit diagram of the current latch circuit Lm.
[0090] This embodiment differs from the first embodiment in the following points. First, a current latch circuit Lm is newly provided between the D / A conve...
no. 3 approach
[0104] The third embodiment of the present invention is a further development on the basis of the second embodiment in order to expand the gray scale (brightness) adjustment range to achieve the object of the present invention. In particular, in the third embodiment, focusing on the fact that the organic EL element can perform high-speed switching on the order of μsec, it is characterized in that the light emission control line Vgn of the pixel circuit shown in the first and second embodiments is pulsed Drive organic EL elements.
[0105] FIG. 9 shows a block diagram of a drive circuit according to the third embodiment, FIG. 10 shows a principle explanatory diagram of the third embodiment, and FIG. 11 shows a timing chart of the drive circuit according to the third embodiment. In FIGS. 9 and 11 , the parts different from the second embodiment are the control method of the light emission control lines Vgn and Vg(n-1) of the pixel circuit and the connection with the pixel circui...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More