Display apparatus and electronic apparatus
View Patent ↗A display apparatus is provided which includes a display element section ( 2 ) for displaying an image in an image display region, a light detection sensor ( 3 ) for detecting the intensity of light in the image display region or in the proximity of the image display region using a thin film transistor formed on the same insulating substrate ( 1 ) as that of the display element section ( 2 ), and a light control circuit ( 5 ) for controlling the luminance when the display element section ( 2 ) displays an image based on a result of the detection by the light detection sensor ( 3 ). Since the light intensity is detected by the light detection sensor ( 3 ) using the thin film transistor formed on the same insulating substrate ( 1 ) as that of the display element section ( 2 ), such a situation that the scale of the apparatus increases for light intensity detection can be prevented while good image display under various environments is made possible.
1. A display apparatus, comprising:
an image display portion configured to display an image on an image display region;
a light detection portion configured to detect the intensity of light in said image display region or in the proximity of said image display region using a thin film transistor formed on a same substrate as that of said image display region; and
a light control portion configured to control the luminance when said image display portion displays an image based on a result of the detection by said light detection portion; wherein
a display element which is controlled by a voltage applied between electrodes is disposed in said image display region;
said light control portion adjusts the amplitude of an opposing electrode voltage to be applied to an opposing electrode opposing to one of the electrodes of said display element based on a result of the detection of said light detection portion;
said light detection portion is configured to respectively detect the intensity of light at a plurality of places in said image display region; and
a mathematic operation portion is configured to carry out a mathematic operation process for obtaining one light intensity detection by averaging the result of the detection of the intensity of light at the plurality of places by said light detection portion.
2. The display apparatus according to claim 1 , wherein said light control portion is capable of carrying out luminance control for individual divisional regions obtained by dividing said image display region into a plurality of portions and controls the luminance regarding the divisional regions based on the results of the detection of the light intensity at places corresponding to the divisional regions.
3. The display apparatus according to claim 1 , further comprising light emission portion configured to serve as a light source for allowing said image display means to carry out the image display; wherein
said light control portion is configured to vary the light emission intensity of said light emission portion along with the amplitude of the voltage to be applied to said opposing electrode to adjust the luminance when said image display portion displays an image.
4. The display apparatus according to claim 1 , further comprising light emission portion configured to serve as a light source for allowing said image display portion to carry out the image display,
said light control portion varying the transmission light amount of light from said light emission portion through said image display portion to adjust the luminance when said image display portion displays an image.
5. The display apparatus according to claim 1 , wherein said light detection portion detects the light intensity of external light to said image display region.
6. The display apparatus according to claim 1 , wherein said light detection portion is configured to detect the light intensity of light obtained from said image display region.
7. The display apparatus according to claim 1 , wherein said light control portion is capable of carrying out amplitude control of the opposing electrode voltage for individual divisional regions obtained by dividing said image display region into a plurality of portions and adjusts the opposing electrode voltage for the divisional regions based on the results of the detection of the light intensity at places corresponding to the divisional regions.
8. An electronic apparatus comprising the display apparatus of claim 1 .
9. The display apparatus according to claim 1 , wherein said light detection portion is disposed at the plurality of places on the same substrate as said image display region.
10. The display apparatus according to claim 1 , wherein said light detection portion is configured to detect the intensity of external light in the proximity of said image display region.
11. The display apparatus according to claim 1 , wherein said light control portion is configured to control the luminance for each of a plurality of divisional regions in said image display region.
12. The display apparatus according to claim 11 , wherein said plurality of divisional regions in said image display region are configured to form a matrix.
13. The display apparatus according to claim 1 , wherein said light control portion is configured to control the luminance by varying an amount of light transmittance.